if(!m)
throw INTERP_KERNEL::Exception("MEDCurveLinearMeshMultiLev constructor 2 : null input pointer !");
if(gts.size()!=1 || pfls.size()!=1)
if(!m)
throw INTERP_KERNEL::Exception("MEDCurveLinearMeshMultiLev constructor 2 : null input pointer !");
if(gts.size()!=1 || pfls.size()!=1)