+ // OLD IDL: ( meshes, uniteGroups, toMerge, tol )
+ // IDL: ( meshes, uniteGroups, toMerge, tol, meshToAppendTo )
+ // PY: ( meshes, uniteGroups, toMerge, tol, allGroups=False, name="", meshToAppendTo=None )
+ _pyID appendMesh = theCommand->GetArg( 5 );