<?xml version="1.0"?>
<ErrorDocumentation xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <ErrorName>CS8141</ErrorName>
  <Examples>
    <string>// CS8141:
// Line: 11

public interface I&lt;T&gt;
{
	int this[T arg] { get; set; }
}

public class C : I&lt;(int a, int b)&gt;
{
	public int this[(int c, int d) arg] {
		get {
			return 1;
		}
		set {

		}
	}
}
</string>
    <string>// CS8141:
// Line: 9

public interface I&lt;T&gt;
{
	T Test ();
}

public class C : I&lt;(int a, int b)&gt;
{
	public (int c, int d) Test ()
	{
		return (1, 2);
	}
}
</string>
  </Examples>
</ErrorDocumentation>