def get_metadata(scope, custom_headers:nil)
      response = get_metadata_async(scope, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def get_metadata(scope, custom_headers:nil)
      response = get_metadata_async(scope, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Gets OData metadata XML document.

 @param scope [String] A valid scope, i.e. management group, subscription,
 resource group, or resource ID. Scope used has no effect on metadata
 returned.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [String] operation results.