<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def readFILTER(self):
 """ Read a SWFFilter """

        filterId = self.readUI8()
        filter = SWFFilterFactory.create(filterId)
        filter.parse(self)
        return filter