parameters: (
        self, source, destination,
        replace_message_field=False, replace_repeated_field=False)
docstring: Merges fields specified in FieldMask from source to destination.
  
      Args:
        source: Source message.
        destination: The destination message to be merged into.
        replace_message_field: Replace message field if True. Merge message
            field if False.
        replace_repeated_field: Replace repeated field if True. Append
            elements of repeated field if False.
docstring_summary: Merges fields specified in FieldMask from source to destination.
docstring_tokens: Merges fields specified in FieldMask from source to destination .
function: def MergeMessage(
        self, source, destination,
        replace_message_field=False, replace_repeated_field=False):
      """Merges fields specified in FieldMask from source to destination.
  
      Args:
        source: Source message.
        destination: The destination message to be merged into.
        replace_message_field: Replace message field if True. Merge message
            field if False.
        replace_repeated_field: Replace repeated field if True. Append
            elements of repeated field if False.
      """
      tree = _FieldMaskTree(self)
      tree.MergeMessage(
          source, destination, replace_message_field, replace_repeated_field)
function_tokens: def MergeMessage ( self , source , destination , replace_message_field = False , replace_repeated_field = False ) : tree = _FieldMaskTree ( self ) tree . MergeMessage ( source , destination , replace_message_field , replace_repeated_field )