[BUG][OBJC] Method definitions to getOfflineState, getReachabilityStatus and setReachabilityStatus: missing from ApiClient implementation

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• What's the version of OpenAPI Generator used?
• Have you search for related issues/PRs?
• What's the actual output vs expected output?
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Description

The interface in the header to the generated Objective-C API client declares methods that are missing from the implementation file.
https://github.com/OpenAPITools/openapi-generator/blob/master/samples/client/petstore/objc/default/SwaggerClient/Core/SWGApiClient.h#L27

They generate these build warnings:

Method definition for 'getOfflineState' not found
Method definition for 'getReachabilityStatus' not found
Method definition for 'setReachabilityStatus:' not found

Calling these methods crashes with NSInvalidArgumentException.

openapi-generator version

4.3.0

OpenAPI declaration file content or url

Any OpenAPI declaration file including the samples generate the bug.

Command line used for generation

./bin/objc-petstore.sh

Steps to reproduce

Build the generated client library to observe the warnings. Call the methods to observe crashes.

E.g.

OpenApiClient.getOfflineState()

OpenApiClient.getReachabilityStatus()

OpenApiClient.setReachabilityStatus(AFNetworkReachabilityStatus.notReachable)

Related issues/PRs

N/A

Suggest a fix

These methods no longer reside in the ApiClient superclass, AFNetworking's AFHTTPSessionManager which is an AFURLSessionManager subclass itself. They reside in AFNetworkReachabilityManager. It would be best to remove them from the header interface.

Start with samples/client/petstore/objc/default/SwaggerClient/Core/SWGApiClient.h and generate the sample using ./bin/objc-petstore.sh. Compare the declared reachability methods with the generated implementation and verify that the build warnings and runtime crashes are gone when those methods are called.