legalAttrs = {'method': <Ft.Xml.Xslt.AttributeInfo.StringAvt instance>, 'p1': <Ft.Xml.Xslt.AttributeInfo.Expression instance>, 'p2': <Ft.Xml.Xslt.AttributeInfo.Expression instance>, 'p3': <Ft.Xml.Xslt.AttributeInfo.Expression instance>, 'p4': <Ft.Xml.Xslt.AttributeInfo.Expression instance>, 'p5': <Ft.Xml.Xslt.AttributeInfo.Expression instance>, 't1': <Ft.Xml.Xslt.AttributeInfo.Expression instance>, 't2': <Ft.Xml.Xslt.AttributeInfo.Expression instance>, 't3': <Ft.Xml.Xslt.AttributeInfo.Expression instance>, 't4': <Ft.Xml.Xslt.AttributeInfo.Expression instance>, ...}