In Magento, for custom API endpoints to be documented in Swagger, the interface methods need to have proper PHPDoc annotations, including @return types. These annotations inform Magento's web API system and Swagger about the return types and descriptions, enabling the endpoint to be displayed correctly.
* Role of @return Annotation:
* The @return annotation is necessary to define the return type for the API method. Without this annotation, Magento's Swagger documentation system may not recognize the output type, which can prevent the endpoint from appearing in Swagger.
* Why Option C is Correct:
* The absence of a @return annotation is a common reason why an endpoint might not appear in Swagger. This is particularly true when using custom interfaces that need to clearly specify return types for API documentation.
* Option A is incorrect because webapi.xml is correctly placed for REST APIs. Option B is not relevant since viewing the endpoint does not require a token; it affects only execution.
* Implementation Advice:
* Ensure that all methods in MyVendor\Blog\Api\PostRepositoryInterface include accurate
@return annotations. Example:
/**
* Retrieve list of posts
* * @return \MyVendor\Blog\Api\Data\PostSearchResultsInterface
*/
* References:
* Adobe Commerce DevDocs on API and Swagger Documentation
* Magento PHPDoc Standards for API Interfaces