internal MSAst.Expression/*!*/ AddDebugInfo(MSAst.Expression/*!*/ expression, SourceLocation start, SourceLocation end) { if (PyContext.PythonOptions.GCStress != null) { expression = Ast.Block( Ast.Call( typeof(GC).GetMethod("Collect", new[] { typeof(int) }), Ast.Constant(PyContext.PythonOptions.GCStress.Value) ), expression ); } return AstUtils.AddDebugInfo(expression, Document, start, end); }