c#开发 setselectionfilter 第一个参数是什么东西，怎样获取

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5 K% j9 _8 B% ?1 {' Q3 S            NXOpen.Selection.MaskTriple[] t = new Selection.MaskTriple[1];
            t[0].Type = UFConstants.UF_solid_type;
0 @% P6 p; g% F5 Z$ d3 B            t[0].Subtype = UFConstants.UF_solid_face_subtype;
            t[0].SolidBodySubtype = UFConstants.UF_UI_SEL_FEATURE_ANY_FACE;
selection0.GetProperties().SetSelectionFilter("aaa", Selection.SelectionAction.AllAndDisableSpecific, t);
2 h0 J# _  r- C# I# l  l也就是上面的”aaa”
- T' f; P- `7 T; ^, }+ z9 k: w, P
) s4 `5 f" D" [( B; A* B8 J8 r6 Tpublic void SetSelectionFilter(