def do_require(version, service)
      filename = [api_path, version.to_s, service.to_s.snakecase].join('/')
      require filename
      return filename
    end
def do_require(version, service)
      filename = [api_path, version.to_s, service.to_s.snakecase].join('/')
      require filename
      return filename
    end
Perform the loading of the necessary source files for a version.

 Args:
 - version: the API version
 - service: service name

 Returns:
 The filename that was loaded