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In addition to above methods, OPTIONS method could be also used.

Responce Response to OPTIONS request includes auto-generated WADL, e.g.:

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Add configuration parameter:

• rest.wadl.enable with default the default value of 'true', and with the importance of 'low'.

Update org.apache.kafka.connect.runtime.rest.RestServer to respect the configuration property described above.

With rest.wadl.enable=true, responce  response to OPTIONS method should have list of supported HTTP methods only, e.g.:

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Add more unit tests under org.apache.kafka.connect.runtime.rest.RestServerTest, asserting on responceresponse's Content-type.

Compatibility, Deprecation, and Migration Plan

Since the default value of the new configuration parameter is 'true', the change should be backward compatible, no action is required for upgrading from older versions.

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1. Disable exposure of WADL without an option to keep exposing it. Some users might rely upon it.