def start(self, timeout=None):
started = super(Node, self).start(timeout=timeout)<EOL>if started:<EOL><INDENT>return self._svc_address  <EOL><DEDENT>else:<EOL><INDENT>return False<EOL><DEDENT>
Start child process
:param timeout: the maximum time to wait for child process to report it has actually started.
None waits until the update has been called at least once.