Interesting output from local functions

tests.cs

public class C {
    public void M() {
        int x = 0;
        {
			    int y = 0;
          // Captures two struct closures
        	int L() => x + y;
        }
    }
}

----

public class C {
    int x = 0;
    public void M() {
		    int y = 0;
        // This + struct closures
       	int L() => x + y;
        L();
    }
}

----

public class C {
    int x = 0;
    public void M() {
        // This-only closure
       	int L() => x;
        L();
    }
}

----

using System;
public class C {
    public void M(int x) {
        Func<int> f = () => x;
        // Located in same closure environment
       	int L() => x;
        L();
    }
}

----

using System;
public class C {
    public void M(int x) {
        {
        	int y = 0;
        	Func<int> f = () => x;
          // Same class environment, with struct env
       		int L() => x + y;
        	L();
        }
    }
}

----

using System;
public class C {
    public void M(int x) {
      {
        	int y = 0;
        	Func<int> f = () => x;
          {
                Func<int> f2 = () => x + y;
                int z = 0;
                // Capture struct and through class env chain
                int L() => x + y + z;
        		    L();
          }
      }
    }
}