_meshDS->RemoveHypothesis(_subShape, anHyp);
if ( !SMESH_Hypothesis::IsStatusFatal( ret ))
// ret should be fatal: anHyp was not added
_meshDS->RemoveHypothesis(_subShape, anHyp);
if ( !SMESH_Hypothesis::IsStatusFatal( ret ))
// ret should be fatal: anHyp was not added