@property
    def wkb(self):
        return wkb_w().write(self)
If both sides of a flow merge are a locally created 
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/contrib/gis/geos/geometry.py/GEOSGeometry.wkb--crossover with--dataset/ETHPy150Open iskandr/parakeet/parakeet/analysis/find_local_arrays.py/FindLocalArrays.visit_merge