public void TestClearSecondaryArguments_Null_ExistingArgs() {
MethodDeclarationNode mdn = new MethodDeclarationNode("MyMethod");
VariableDeclarationNode vdn = new VariableDeclarationNode("foo");
mdn.AddSecondaryArgument(vdn, new WordNode("to", PartOfSpeechTag.Preposition));
Assert.AreEqual(1, mdn.SecondaryArguments.Count);
mdn.ClearSecondaryArguments();
Assert.AreEqual(0, mdn.SecondaryArguments.Count);
}