cv2.CalcOpticalFlowBM() does not exist in Opencv-3.0.0

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Hi,

I used to use cv2.CalcOpticalFlowBM() a long time back. Now I upgraded to Opencv-3.0.0 and could not find it. I went to an earlier version of Opencv 2.4.9, and I still could not find it. It seems this function is deprecated. is there a way to get Python bindings to that function?