def __getstate__(self):
        return state_pickler.dumps(self)
This method returns the total number of fields in the feature vector.
dataset/ETHPy150Open enthought/mayavi/mayavi/core/base.py/Base.__getstate__--crossover with--dataset/ETHPy150Open sightmachine/SimpleCV/SimpleCV/Features/FeatureExtractorBase.py/FeatureExtractorBase.getNumFields