cvGraphRemoveVtxByPtr 1788 modules/core/include/opencv2/core/core_c.h CVAPI(int)  cvGraphRemoveVtxByPtr( CvGraph* graph, CvGraphVtx* vtx );
cvGraphRemoveVtxByPtr 1555 modules/core/test/test_ds.cpp                  cvGraphRemoveVtxByPtr( graph, vtx );