Should Api Return Null

Abuse rate limits are not intended to interfere with legitimate use of the API. Pagination # The GraphQL type system allows for some fields to return lists of values, but leaves the pagination of longer lists of values up to the API designer. Emerging of the ExecutorService and the ForkJoin simplified developer's life a little bit, but they still should keep in mind how to create a specific executor, how to run it and so on. The page query parameter is reserved for pagination. Loc it wouldn't even wrap the range query in a boolean query but just issue a plain range query. Avoid null if possible Some argue that allowing null into the API of a class, in the form of possibly- null parameters or return values, should be avoided if possible: null references can only be used in a boolean test - any other use will throw a NullPointerException. What is the Difference between Runtime and RunTime java API's? 7. Socket that starts the connection. For a full outline of the REST Endpoints and parameters see the REST API Guide here Note: When using the API to search secrets, the account used must have at least View permissions on the full folder path in order find the correct secret. This means if you try to scroll up nothing happens. an array of API keys to narrow the search to, will return messages sent by ANY of the keys limit integer the maximum number of results to return, defaults to 100, 1000 is the maximum. Create and retrieve refunds for an order. This is a shorthand for PyErr_SetNone(PyExc_MemoryError); it returns NULL so an object allocation function can write return PyErr_NoMemory(); when it runs out of memory. [*] - Added Oliver Burn's chainsaw tool to the core log4j distribution. FORMULA for all cells, even though the formula is only defined in the OOXML file for the top left cell of the array. read-- Retrieves information about the specified object. Representing Null Values in a REST JSON Response One, ask the consumer to refer to the REST API documentation, which can be easily created with plenty of tools these days. Fix a segfault caused by a lack of bounds checking on the cache. \f2apt\fP リフレクト API は、 構築時のソースベースで、プログラム構造に関する読み取り専用ビューを提供します。これらのリフレクト API は、総称を追加した後に、Java(TM) プログラミング言語の型システムを正しくモデル化するように設計されています。. NET Core 2 Web API using Visual Studio 2017. Moreover, the implementation of validation is hard as you have to support both use cases: creating (some fields must not be null) and updating (null values to mark fields that should not be updated) at the same time. setApplicationMenu(menu) menu Menu | null; Sets menu as the application menu on macOS. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Will return the current value, even if this has been modified after the page has been loaded. before your create controller you should do build When i tried to navigate to api/employees i get the following Help me please why return null data in Get(int. (DB) Ideally, these three layers (tiers) should not know anything about the platform, technology, and structure of each other. The BDD styles are expect and should. It is based on a subset of the JavaScript Programming Language Standard ECMA-262 3rd Edition - December 1999. NET team added OData support to Web API in the ASP. The admin UI (including post submit box and quick edit) should reflect this new custom post status. Replace {YOUR-API-KEY} with a valid API key and {PACKAGE-ID} with the id of an existing CKAN dataset. Applying the Repository Pattern for the Data Access Layer – Part 2. Note: Delegate API is still experimental and is subject to change. Some images on this page, though, have been captured in SoapUI Pro – the next-generation API testing tool that provides extended support for REST web services in comparison with SoapUI Open Source. The child_process. A project is an abstract concept, but you typically map a Gradle project to a software component that needs to be built, like a library or an application. To let RabbitMQ generate a node-wide unique tag,. Using the ArcGIS API for JavaScript with Angular. Moreover, the implementation of validation is hard as you have to support both use cases: creating (some fields must not be null) and updating (null values to mark fields that should not be updated) at the same time. an array of API keys to narrow the search to, will return messages sent by ANY of the keys limit integer the maximum number of results to return, defaults to 100, 1000 is the maximum. In this example, the parent handle is NULL because we have no parent, this is our main or Top Level window. Let's say we want to create a wrapper object for the HipsterJesus API. Return value: Always NULL. Then programmers that call. timestamps null: false end There's a short-hand method for each of the type values declared at the top. 0 query string format or body content. Runs the macro contained in the string macro. See Events API: onReady: Function, [functions] null. opener parameter in it is null. We are at the end of 2016, and this is still an issue for my organization (SP 2013). React Lifecycle Methods: render and componentDidMount. FORMULA for all cells, even though the formula is only defined in the OOXML file for the top left cell of the array. In those cases, use non-null types to make that guarantee. If we are talking about lifecycle methods in React. Unfortunately, asserts are vastly under used in. If you have not tried SoapUI Pro yet, download a free trial version and see why so many fans of SoapUI have moved to Pro. January 5, 2018. For successful requests, there is also a top-level response field which will be a nested object. This Ajax API makes it possible to add items to the cart, update quantities in the cart, and fetch information about the cart, without a page refresh. I'm taking a pragmatic, resource oriented approach to the API (resource oriented, uniform interface, addressability, but no real HATEOAS). readline returns null on end of file. This guide provides instructions on how to resolve specific API errors. If the string starts with 0x or -0x (lower or upper case) or # or -#, it will be interpreted as a hexadecimal Integer - or Long, if the number of digits after the prefix is more than 8 - or BigInteger if there are more than 16 digits. If this is null any existing property is not converted. But it is left to the developer to use those features to treat the exceptions and return meaningful responses to the API client. Overview; auth:import and auth:export; Firebase Realtime Database Operation Types; Deploy Targets; iOS — Swift. Better APIs. When true, the prompt will not close if the input value is null, an empty string, or fails the input type's built-in validation constraints. A poorly formed request should return 400, not 404. 5 available then I definitely recommend checking the new features out. React Lifecycle Methods: render and componentDidMount. add should return null but in fact, it returns an error: No target body found to cut or intersect! More, the code runs with success when the line with participantBodies is uncommented. OData (Open Data Protocol) is an ISO/IEC approved, OASIS standard that defines a set of best practices for building and consuming RESTful APIs. timestamps null: false end There's a short-hand method for each of the type values declared at the top. This practice can lead to denial-of-service vulnerabilities when the client code fails to explicitly handle the null return value case. These pages outline the chart configuration options, and the methods and properties of Highcharts objects. arrays or null) and avoids touching the DOM. ) which are not reasonable to do any longer for Apache 1. Should I include fields with null values in the APIs responses. Asserts that execution of the supplied executable throws an exception of the expectedType and returns the exception. Sometimes you want to return null indicating something is wrong, sometimes you want to throw an exception. The API allows creating parallel streams, which perform operations in a parallel mode. If we are talking about lifecycle methods in React. Once you've obtained a session ID and server URL, you'll generally include the session ID in every API call, and you'll direct your client to make the API request to the host that you obtained. When a component renders to a string, findDOMNode returns a text DOM node containing that value. #Fetching Before Navigation. For instance, java. 12 March 2017 C#, ASP. NET MVC 4; however, it has its origins in WCF as WCF Web API. Add a method peek() to Stack. Initiates an IPC connection. Method to use for accessing binary content of binary nodes (nodes for which isBinary() returns true); or for Text Nodes (ones for which textValue() returns non-null value), to read decoded base64 data. React Lifecycle Methods: render and componentDidMount. Object actual) Asserts that two objects do not refer to the same object. 4 Symbol Tables. Parameters: method - The Method to check className - The name of class assumed to contained the initial declaration of the method. opener parameter in it is null. You should note that data. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. But, if you really have no idea of how to handle a null value (and return a null is not an option), you should use an Debug. Each refund is a record of money being returned to the customer. Operations on boolean primitives and Boolean objects. This indicates whether the string is empty or null. All properties except for url are optional. It provides a platform- and language-neutral wire protocol as a way for out-of-process programs to remotely instruct the behavior of web browsers. d(TAG,"no text detected"); } return text != null; } With that in place, you should be able to build and check via Android Monitor (adb logcat) that text is being tapped when you expect it to. If we’re writing API that can in some cases return meaningful value, and in other null, we should, instead of returning null or not null reference – return Optional with wrapped value or empty Optional. The WordPress front-end provides a default set of URL mappings, but the tools used to create them (e. The existing list should be passed as the first argument and the new list is returned from this function. js then render() is the most used method. OData helps you focus on your business logic while building RESTful APIs without having to worry about the various approaches to define request and response headers, status codes, HTTP methods, URL conventions, media types, payload formats, query. pass this challenge, create an Apex class that inserts a new account named after an incoming parameter. java that converts an arithmetic expression from infix to postfix. In a REST API, the concept of idempotence is tied to HTTP methods instead of endpoint callbacks. As I've been setting up a JSON-RPC (Remote Procedure Call) API for a ColdFusion project, I've been learning a few little tips and trips about JSON formation. Allow NULLs to be passed as a valid value via the APIs Salesforce Platform , Web Services API Currently when passing a NULL value through through API it is not recognized as a change to the field. 5 available then I definitely recommend checking the new features out. Most well known public facing API's return a consistent response with a similar structure returned for all requests regardless of success or failure. This Ajax API makes it possible to add items to the cart, update quantities in the cart, and fetch information about the cart, without a page refresh. SGI's remaining changes are not taken over, because they are either cluttering the Apache 1. At first, create a simple maven web project and update. Initiates an IPC connection. Should the result of getInfo() being used instead of only displayed, throw an exception. Complete Spring Boot Rest API tutorial with all CRUD operations. Allow NULLs to be passed as a valid value via the APIs Salesforce Platform , Web Services API Currently when passing a NULL value through through API it is not recognized as a change to the field. A symbol table is a data type that we use to associate values with keys. list() method. REST API is available as of Secret Server 9. This week, in accordance with the. `"none"` is kind of a magic word that doesn't really have any technical meaning, and makes it hard to test for truthiness. Return: If found, a raw transaction objects having the same format as the bitcoind getrawtransaction API call. java that returns the number of items in the collection. If command is not a null pointer, the value returned depends on the system and library implementations, but it is generally expected to be the status code returned by the called command, if. But source is still "user" since the origin of the change was the user's click. This can be due to many reasons, but mainly due to a Foursquare connectivity issue. Once all of the APIs return promises, it should be relatively rare that you need to construct one by hand. null_ok; The first two items (name and type_code) are mandatory, the other five are optional and are set to None if no meaningful values can be provided. Web API Localization March 20, 2014 · by damienbod · in. First an introduction to cookies, and a summary of document. Web API will then immediately return the response. API Reference; CLI Reference. Write a filter InfixToPostfix. Allow NULLs to be passed as a valid value via the APIs Salesforce Platform , Web Services API Currently when passing a NULL value through through API it is not recognized as a change to the field. Note that the 4th element might well not be cell 4, as the iterator will not return un-defined (null) cells. In the above example, we have thrown exception using HttpResponseException class as we know there is a chance to employee not found in the database. Considerations When Returning Java 8's Optional From a Method In the debate over single vs. Null object is a special object, which has different meaning in different context, for example, here an empty Iterator, calling hasNext() on which returns false, can be a null object. [email protected] Returns: None. See Events API: onReady: Function, [functions] null. Can HashMap store null values?If yes, how many and in which one? 6. Please see below: [HttpGet] public IEnumerable Get(string id, string surnam, strin. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. For example, it might be handy for implementing a component that compares its previous and next children to decide which of them to animate in and out. I tried to look all over for an answer to this, but all the treads I kept coming across anywhere where all about "X keeps returning null, it's not supposed to" type issues. By returning a null object (i. If this is null any existing property is not converted. This way, responses to simple requests (like setting a value to true or false) can be defined just by status codes, no additional data involved. c: ST_Segmentize returns invalid LINESTRING for zero-length input (#1304) 2012-01-30 20:41 pramsey * liblwgeom/lwlinearreferencing. This means if you try to scroll up nothing happens. Then come the three functions and their explanation. Get a Zillow Web Services ID (ZWSID) to use when making your API calls. A poorly formed request should return 400, not 404. As min() doesn't do type checking, an included NULL return would fail the permission checks. A URL’s port is either null or a 16-bit unsigned integer that identifies a networking port. curl_slist_append appends a string to a linked list of strings. Better however would be to return an informative string "(Info missing)". API reference Samples. It will be merged as props to your connected component. # all rights reserved. However, building a truly secure, sturdy, hearty API, can take a little more work, just as a chef takes more time when crafting a great meal. This Ajax API makes it possible to add items to the cart, update quantities in the cart, and fetch information about the cart, without a page refresh. Null object is a special object, which has different meaning in different context, for example, here an empty Iterator, calling hasNext() on which returns false, can be a null object. pass this challenge, create an Apex class that inserts a new account named after an incoming parameter. Notice: either return or notify (done) must be used with promise assertions. Emerging of the ExecutorService and the ForkJoin simplified developer's life a little bit, but they still should keep in mind how to create a specific executor, how to run it and so on. timestamp validation As the message will be "Timestamp is required" for a failed validation, I guess that you need to check if at least one key is found. This is important for processing subsets of large result sets, avoiding to read and hold the entire result set in the database or in the JDBC driver if we're never interested in the entire result in the first place (for example, when performing searches that might return a large number of matches). If an HTTP request contains includeAddress parameter in the query string with value true then it will return all students with its address otherwise it will return students without address. Web API Localization March 20, 2014 · by damienbod · in. The specified string has been appended when this function returns. Creating a simple REST API in PHP I’m the author of php-crud-api and I want to share the core of the application with you. Object actual) Asserts that two objects do not refer to the same object. A variable whose type is Optional should never itself be null; it should always point to an Optional instance. pass this challenge, create an Apex class that inserts a new account named after an incoming parameter. Considerations When Returning Java 8's Optional From a Method In the debate over single vs. Srenvio expects for the API key to be included in all API requests to the server in a header that looks like the following: Authorization: Token token=YOUR_API_KEY. NET Web API related question that frequently comes up frequently is how to capture the raw request content to a simple parameter on a controller method. (from 151010-20) 4891331 BigInteger a. Call getCellNum() on the returned cells to know which cell they are. null_counts: bool, optional. I have one list like category with three column Title and two lookup name like childcategory, parentcategory. This guide demonstrates how to use the ArcGIS API for JavaScript with Angular applications built with the Angular CLI. Lets say on the producer side everything is clean, string type methods only return strings, never null. 5 available then I definitely recommend checking the new features out. Otherwise, it will return the pointer you provided. If the data is not modified by your filter, then the original data must be returned so that subsequent plugins can continue to modify the value if necessary. For instance, java. Azure Cosmos DB: DocumentDB API in Action By Christos S. All database adapters implement a common interface for initialization, pagination, extending and querying. materialized - a Materialized that describes how the StateStore for the resulting KTable should be materialized. The projects are returned sorted by creation date, with the most recently created projects appearing first. Does anyone yet have the answer to 'return records where the date is null' ?. If React component has to display any data then it uses JSX. The maximum value for Count is 1000. This is an updated version of a post I did last May on the topic of jwt auth with Angular 2+ and ASP. Third, we should note that one has to be extremely careful with how values are returned from a thread. When the 'open' function is called, there should be an object returned that is the newly opened window, but returns null. The CircleCI API is a full-featured RESTful API that allows you to access all information and trigger all actions in CircleCI. So if all the terms are null (or empty string) on userInput except userInput. Turns out that's not as easy as it should be. ExtensionContext), ParameterContext. Most well known public facing API's return a consistent response with a similar structure returned for all requests regardless of success or failure. com/software/ttytter. However, sometimes. Null object is a special object, which has different meaning in different context, for example, here an empty Iterator, calling hasNext() on which returns false, can be a null object. This guide demonstrates how to use the ArcGIS API for JavaScript with Angular applications built with the Angular CLI. 2 (and below) and OpenSSL 1. Map's get method returns null if there is no key-value mapping for the specified key. If you don't want to modify some field just don't include it in json representation. The sqlite3_bind_pointer(S,I,P,T,D) routine causes the I-th parameter in prepared statement S to have an SQL value of NULL, but to also be associated with the pointer P of type T. execFileSync() method is generally identical to child_process. Holds the cached data. Queries can be submitted via the 1. There are three ways in which the function can be annotated with the needed dependencies. Pagination # The GraphQL type system allows for some fields to return lists of values, but leaves the pagination of longer lists of values up to the API designer. Because there are multiple return types and paths in this type of action, liberal use of the [ProducesResponseType] attribute is necessary. Tables in an array formula return CellType. Right now we return null for this field in the API response. The projects are returned sorted by creation date, with the most recently created projects appearing first. When that happens, you'll need to generate a new key to use our API. The REST API allows you to send a JQL query and receive a subset issues. Returns: Return named value converted to type T or the default value if non existing or can't be converted. One feature conspicuously missing from ASP. If the value returned from ServletRequest. A symbol table is a collection of key-value pairs. When SQLite tries to access a file that is locked by another process, the default behavior is to return SQLITE_BUSY. 5 the model has improved further and in addition is supported directly from C# using the new async and await keywords (see "Visual Studio Asynchronous Programming" for background). Returns: cell iterator of the physically defined cells. Fix a segfault caused by a lack of bounds checking on the cache. setMaxRows public void setMaxRows(int maxRows) Set the maximum number of rows for this JdbcTemplate. If the API uses null, then at some point the producer needs to create this null to conform with the API. Use the following API methods to request details about test cases and to create or modify test cases. Best practices for API packages. Representing Null Values in a REST JSON Response One, ask the consumer to refer to the REST API documentation, which can be easily created with plenty of tools these days. Working with jQuery DataTables. That property was interpreted on the. How to Use should / expect Interface. Empty enumrables, strings etc are good examples If such a neutral value does not exist, null should be returned. static void. Clients can store (put) an entry into the symbol table by specifying a key-value pair and then can retrieve (get) the value corresponding to a particular key. `"none"` is kind of a magic word that doesn't really have any technical meaning, and makes it hard to test for truthiness. Try to avoid using the "ref" and "out" keywords. The API allows creating parallel streams, which perform operations in a parallel mode. If neither exists, null is returned. Email API Ads Twilio Programmable SMS Expert Services Pricing View all products SendGrid is For Startups Enterprises High Volume Senders Marketers Ecommerce Developers Our Customers Resources Guides Blog Videos & Podcasts Webcasts Knowledge Center Status Contact Support Developers Start in 5 Minutes API Reference SMTP Service Libraries Event. By default, the function will return two arguments: an array of results, and a metadata object, containing number of affected rows etc. This getter will unwrap all standard wrappers like Number, Boolean, String. Returns: Return named value converted to type T or the default value if non existing or can't be converted. Hope you enjoyed reading and I suggest further exploring Optional API. Check out the Style Guide for a comparison. Creating a simple REST API in PHP I'm the author of php-crud-api and I want to share the core of the application with you. Asserts that execution of the supplied executable throws an exception of the expectedType and returns the exception. well actually in my case the client might be java, objective-c, or javascript. NET Web API 2, Owin middleware, and ASP. Scheme or Request. In this tutorial I would like to demonstrate the ease of creating a REST API using postgres functions. If the API uses null, then at some point the producer needs to create this null to conform with the API. Return value: Always NULL. Then come the three functions and their explanation. The authenticated user must be able to manage the asset. The Confirmation component should only be rendered after 'Show Answer' is pressed and it should ask the user if they want to reveal the answer. This guide demonstrates how to use the ArcGIS API for JavaScript with Angular applications built with the Angular CLI. PyObject* PyErr_SetFromErrno (PyObject *type) ¶ Return value: Always NULL. Parameters: value: scalar, dict, Series, or DataFrame. What is the Difference between Runtime and RunTime java API's? 7. 4 Symbol Tables. As this only ever works on physically defined cells, the Row. It should return an object to update the state, or null to update nothing. List's get method on the other hand throws an IndexOutOfBoundsException if the index is invalid. The calling function may simply iterate the list as normal, effectively doing nothing. Return the View object, or null if we are using a view name to be resolved by the DispatcherServlet via a ViewResolver. materialized - a Materialized that describes how the StateStore for the resulting KTable should be materialized. Each entry in the array is a separate project object. Feel free to search this API through the search bar or the navigation tree in the sidebar. It is easy for machines to parse and generate. Additional articles that cover features in ASP. html 2019-10-25 19:10:02 -0500. Servers and clients SHOULD use this key for pagination operations. It is easier to read and test than the http message based return type, and wrapping your responses with Ok () is not much more effort than returning them directly. On the other hand, return pObj is less clear (even if the variable name was improved), because you have to look though the whole function to find out what it really means. Rather than having this method take in a handler that's called when the request is resolved, we can just have the method return a promise object. Whether to show the non-null counts. NET Web API 2 can be found here. Pass in NULL in the list argument to create a new list. For all wondering what are the things a C# developer should and should not do. Robert Kiyosaki – 4 Reasons Why I Don’t Use A Mortgage Broker. If the string starts with 0x or -0x (lower or upper case) or # or -#, it will be interpreted as a hexadecimal Integer - or Long, if the number of digits after the prefix is more than 8 - or BigInteger if there are more than 16 digits. Write Better JavaScript with Promises Building Resilient Systems on AWS : Learn how to design and implement a resilient, highly available, fault-tolerant infrastructure on AWS. an array of API keys to narrow the search to, will return messages sent by ANY of the keys limit integer the maximum number of results to return, defaults to 100, 1000 is the maximum. Each entry in the array is a separate project object. Can you please help me understand why is this happening? Below is the sample code used: declare lr_lot_rec. timestamp validation As the message will be "Timestamp is required" for a failed validation, I guess that you need to check if at least one key is found. Most API calls require an access token, but malicious developers can impersonate OAuth Clients or steal access tokens. Abstract: The HTTP Client class provides useful methods to call an ASP. You might want to examine the return value of those functions in detail, but since both are specified to return boolean types there should be no doubt. well actually in my case the client might be java, objective-c, or javascript. 3 Cherwell REST API to login user, create and view incidents etc We are observing the CherwellAPI will return NULL response randomly as more and more requests are added. Try to avoid using the "ref" and "out" keywords. In Web API OData, an OData controller (not API controller ) is severed as the request handler to handle HTTP requests, while the public methods (called action methods) in the controller are invoked to execute the business logic. Serialized state is intended to be used for two main purposes: first, storing a preparsed description of the state in the URL so that in the simple case an author doesn't have to do the parsing (though one would still need the parsing for handling URLs passed around by users, so it's only a minor optimization). This attribute will be None for operations that do not return rows or if the cursor has not had an operation invoked via the. API Gateway Mapping Template and Access Logging Variable Reference This section provides reference information for the variables and functions that Amazon API Gateway defines for use with data models, authorizers, mapping templates, and CloudWatch access logging. Get Started. If any invalid mappings have been supplied, this method will return null. Is there a known limitation for the REST. Each method returns an object, allowing the calls to be chained together in a single statement without requiring variables to store the intermediate results. NET Core JWT Authentication Project Structure. When a component renders to a string, findDOMNode returns a text DOM node containing that value. The placeholder function will return a hard-coded HTML string. If no exception is thrown, or if an exception of a different type is thrown, this method will fail. You can adjust this behavior from C code using the sqlite3_busy_handler() or sqlite3_busy_timeout() API functions. Returns the object bound with the specified name in this session, or null if no object is bound under the name. The library that I will be using is @thrinz/pgapi. Servers and clients SHOULD use this key for pagination operations. Should the result of getInfo() being used instead of only displayed, throw an exception. In fact, it's so common, that there's even a specification for it called JSR 303 bean validation and JSR-380 which contains version 2 of the same specification. SharePoint Online : Using REST API for getting list items return null. The return of your mapDispatchToProps functions are regarded as dispatchProps. cookie, followed by an example. Action Results in Web API 2 - ASP. When file_get_contents() receives anything else than a 200 (or possibly 2xx) it will return a null and iirc an E_NOTICE will be raised. Also improved the ordering of the test so that chunked encoding will be set whenever it is desired instead of only when KeepAlive is enabled. The behavior of the builder after calling build() is undefined. before your create controller you should do build When i tried to navigate to api/employees i get the following Help me please why return null data in Get(int. If the account is successfully inserted, the method should return the account record. render() currently returns a reference to the root ReactComponent instance. A set of key/value pairs that configure the Ajax request. plain_implicit - True if the node tag may be omitted whenever the scalar value is presented in the plain style. The Routing of Web API OData is derived from Web API Routing and do more extensions. opener — it returns null). A variable whose type is Optional should never itself be null; it should always point to an Optional instance. There are 115 patches in this series, all will be posted as a response to this one. This chapter describes the common adapter initialization and options, how to enable and use pagination, the details on how specific service methods behave and how to extend an adapter with custom functionality. Holds the cached data. Please see below: [HttpGet] public IEnumerable Get(string id, string surnam, strin. You should see a Display all properties button on the ribbon when you select or open a message. Url properties in the controller such as Request. NET Web API application, you can chose whether you want to return a POCO from your action, which can be any type that will then be serialized, an instance of HttpResponseMessage , or, since Web API 2, an instance of IHttpActionResult. Having "split workflow" is bad. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Returns an array of service names which the function is requesting for injection. It is also called Business Tier.