Content-Type Header Overwritten in patch_feature_flag_with_http_info Method

[nastyagrishina]

Description

There is an issue with the patch_feature_flag_with_http_info method in the LaunchDarkly API Client library. Even when the Content-Type header is provided, it gets overwritten, which causes the semantic patch requests to fail.

Steps to Reproduce

1. Call the patch_feature_flag_with_http_info method to make a semantic patch request.
2. Set the Content-Type header to application/json; domain-model=launchdarkly.semanticpatch.
3. Observe that the Content-Type header does not retain the provided value and is instead set to application/json.

Expected Behavior

The Content-Type header should retain the provided value and include domain-model=launchdarkly.semanticpatch to comply with the LD API Docs for semantic patch requests.

Actual Behavior

The Content-Type header is overwritten to application/json, causing the request to fail.

Additional Information

I have created a pull request with proposed changes to address this issue. Please take a look: (#5)

Thank you!

[garrettblehm]

This is a problem for more than just the FeatureFlagsApi.

This code is present in all PATCH API operations:

content_type = @api_client.select_header_content_type(['application/json'])

if !content_type.nil?
  header_params['Content-Type'] = content_type
end