class Gitlab::Request

def validate(response)

Returns parsed response for successful requests.
Checks the response code for common errors. 
def validate(response)
  error_klass = Error::STATUS_MAPPINGS[response.code]
  raise error_klass, response if error_klass
  parsed = response.parsed_response
  parsed.client = self if parsed.respond_to?(:client=)
  parsed.parse_headers!(response.headers) if parsed.respond_to?(:parse_headers!)
  parsed
end