def aggregate_metadata_get_by_host(context, host, key=None):
    return IMPL.aggregate_metadata_get_by_host(context, host, key)
Returns a set combining the points in this Geometry not in other,
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/db/api.py/aggregate_metadata_get_by_host--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/contrib/gis/geos/geometry.py/GEOSGeometry.sym_difference