parameters: (self, serialized)
docstring: Merges serialized protocol buffer data into this message.
  
      When we find a field in |serialized| that is already present
      in this message:
        - If it's a "repeated" field, we append to the end of our list.
        - Else, if it's a scalar, we overwrite our field.
        - Else, (it's a nonrepeated composite), we recursively merge
          into the existing composite.
  
      TODO(robinson): Document handling of unknown fields.
  
      Args:
        serialized: Any object that allows us to call buffer(serialized)
          to access a string of bytes using the buffer interface.
  
      TODO(robinson): When we switch to a helper, this will return None.
  
      Returns:
        The number of bytes read from |serialized|.
        For non-group messages, this will always be len(serialized),
        but for messages which are actually groups, this will
        generally be less than len(serialized), since we must
        stop when we reach an END_GROUP tag.  Note that if
        we *do* stop because of an END_GROUP tag, the number
        of bytes returned does not include the bytes
        for the END_GROUP tag information.
docstring_summary: Merges serialized protocol buffer data into this message.
docstring_tokens: Merges serialized protocol buffer data into this message .
function: def MergeFromString(self, serialized):
      """Merges serialized protocol buffer data into this message.
  
      When we find a field in |serialized| that is already present
      in this message:
        - If it's a "repeated" field, we append to the end of our list.
        - Else, if it's a scalar, we overwrite our field.
        - Else, (it's a nonrepeated composite), we recursively merge
          into the existing composite.
  
      TODO(robinson): Document handling of unknown fields.
  
      Args:
        serialized: Any object that allows us to call buffer(serialized)
          to access a string of bytes using the buffer interface.
  
      TODO(robinson): When we switch to a helper, this will return None.
  
      Returns:
        The number of bytes read from |serialized|.
        For non-group messages, this will always be len(serialized),
        but for messages which are actually groups, this will
        generally be less than len(serialized), since we must
        stop when we reach an END_GROUP tag.  Note that if
        we *do* stop because of an END_GROUP tag, the number
        of bytes returned does not include the bytes
        for the END_GROUP tag information.
      """
      raise NotImplementedError
function_tokens: def MergeFromString ( self , serialized ) : raise NotImplementedError