def handle_m2m_field(self, obj, field):
        raise NotImplementedError
Determines if a scan node is locked.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/core/serializers/base.py/Serializer.handle_m2m_field--crossover with--dataset/ETHPy150Open log2timeline/dfvfs/dfvfs/helpers/source_scanner.py/SourceScannerContext.IsLockedScanNode