def CopyFrom(self, other_msg):
if self is other_msg:<EOL><INDENT>return<EOL><DEDENT>self.Clear()<EOL>self.MergeFrom(other_msg)<EOL>
Copies the content of the specified message into the current message.

        The method clears the current message and then merges the specified
        message using MergeFrom.

        Args:
          other_msg: Message to copy into the current one.