<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _write_config(self):
 """Write this component's configuration back to the database"""


        if not self.config:
            self.log("Unable to write non existing configuration", lvl=error)
            return

        self.config.save()
        self.log("Configuration stored.")