Use custom TargetType as the client return type

[TharmiganK]

Purpose

Defined a target type for the client return types which is http:Response|anydata, this will make sure the SAP client is not breaking with any change done to the http:TargetType, and limits the return type to http:Response and anydata.

With update 10, the http:TargetType has been change to http:Response|anydata|stream<http:SseEvent, error?>. This change is done to support Server-Sent Events with the HTTP client. Currently the Server-Sent Events are not fully supported(there is initial support to map single text/event-stream media type to the stream) in the OpenAPI client generation. So, with this change, the SAP connectors will not support Server-Sent Event binding. If this support is required, we have to change this target type to http:Response|anydata|stream<http:SseEvent, error?>.

Fixes: ballerina-platform/ballerina-library#6905

Examples

N/A

Checklist

• Linked to an issue
• Updated the specification
• Updated the changelog
• Added tests
• Checked native-image compatibility

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.80%. Comparing base (833f4a5) to head (06b49f5).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #21   +/-   ##
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  Coverage   91.80%   91.80%           
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  Files           2        2           
  Lines         122      122           
  Branches       58       58           
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  Hits          112      112           
  Misses         10       10           

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