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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def __RenderOurModuleKeyFlags(self, module, output_lines, prefix=''):
 """Generates a help string for the key flags of a given module. Args: module: A module object or a module name (a string). output_lines: A list of strings. The generated help message lines will be appended to this list. prefix: A string that is prepended to each generated help line. """

    key_flags = self._GetKeyFlagsForModule(module)
    if key_flags:
      self.__RenderModuleFlags(module, key_flags, output_lines, prefix)