[BUG] FixIt resolves typealiases

[Igoorx]

When you use FixIt to generate the code for an interface that has a method that uses a typealias, the typealias gets resolved in the output of the FixIt.

	typealias LongType = Dictionary<int, MemoryStream>;

	interface IMyInterface
	{
		public void DoSomething(LongType myArg);
	}

	class MyClass : IMyInterface
	{
		// Below method was generated with FixIt
		public void DoSomething(Dictionary<int, MemoryStream> myArg)
		{

		}
	}