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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 validate(self, safe_callback=True):
 # type: (bool) -> bool """ Ends the component validation, registering services :param safe_callback: If True, calls the component validation callback :return: True if the component has been validated, else False :raise RuntimeError: You try to awake a dead component """

        with self._lock:
            if self.state in (
                StoredInstance.VALID,
                StoredInstance.VALIDATING,
                StoredInstance.ERRONEOUS,
            ):
                # No work to do (yet)
                return False

            if self.state == StoredInstance.KILLED:
                raise RuntimeError("{0}: Zombies !".format(self.name))

            # Clear the error trace
            self.error_trace = None

            # Call the handlers
            self.__safe_handlers_callback("pre_validate")

            if safe_callback:
                # Safe call back needed and not yet passed
                self.state = StoredInstance.VALIDATING

                # Call @ValidateComponent first, then @Validate
                if not self.__safe_validation_callback(
                    constants.IPOPO_CALLBACK_VALIDATE
                ):
                    # Stop there if the callback failed
                    self.state = StoredInstance.VALID
                    self.invalidate(True)

                    # Consider the component has erroneous
                    self.state = StoredInstance.ERRONEOUS
                    return False

            # All good
            self.state = StoredInstance.VALID

            # Call the handlers
            self.__safe_handlers_callback("post_validate")

            # We may have caused a framework error, so check if iPOPO is active
            if self._ipopo_service is not None:
                # pylint: disable=W0212
                # Trigger the iPOPO event (after the service _registration)
                self._ipopo_service._fire_ipopo_event(
                    constants.IPopoEvent.VALIDATED, self.factory_name, self.name
                )
        return True