<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def toProtocolElement(self):
 """ Converts this VariantAnnotationSet into its GA4GH protocol equivalent. """

        protocolElement = protocol.VariantAnnotationSet()
        protocolElement.id = self.getId()
        protocolElement.variant_set_id = self._variantSet.getId()
        protocolElement.name = self.getLocalId()
        protocolElement.analysis.CopyFrom(self.getAnalysis())
        self.serializeAttributes(protocolElement)
        return protocolElement