github
diff --git a/‎csharp/downgrades/fc9c7ab844ab055b97222a97e895b4bf2e1f8f4e/expressions.ql‎
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+class Expression extends @expr {
+  string toString() { none() }
+}
+
+class TypeOrRef extends @type_or_ref {
+  string toString() { none() }
+}
+
+from Expression e, int k, int kind, TypeOrRef t
+where
+  expressions(e, k, t) and
+  if k = [136, 137] then kind = 106 else kind = k
+select e, kind, t