anchor.diff:                 ("( .ctor )", "N.D1.( .ctor )", "file2", ((5, 5), (5, 7)),
                   ["member"; "ctor"]);
                  ("SomeProperty", "N.D1.SomeProperty", "file2", ((6, 13), (6, 25)),
  -                ["member"]); ("x", "x", "file2", ((6, 11), (6, 12)), []);
  +                ["member";"getter"]); ("x", "x", "file2", ((6, 11), (6, 12)), []);
                  ("M", "M", "file2", ((6, 28), (6, 29)), ["module"]);
                  ("xxx", "M.xxx", "file2", ((6, 28), (6, 33)), ["val"]);
                  ("D2", "N.D2", "file2", ((8, 5), (8, 7)), ["class"]);
                  ("( .ctor )", "N.D2.( .ctor )", "file2", ((8, 5), (8, 7)),
                   ["member"; "ctor"]);
                  ("SomeProperty", "N.D2.SomeProperty", "file2", ((9, 13), (9, 25)),
  -                ["member"]); ("x", "x", "file2", ((9, 11), (9, 12)), []);
  +                ["member";"getter"]); ("x", "x", "file2", ((9, 11), (9, 12)), []);
                  ("( + )", "Microsoft.FSharp.Core.Operators.( + )", "file2",
                   ((9, 36), (9, 37)), ["val"]);
                  ("M", "M", "file2", ((9, 28), (9, 29)), ["module"]);
  
positive.code:                ("( .ctor )", "N.D3.( .ctor )", "file2", ((15, 5), (15, 7)),
                  ["member"; "ctor"]);
                 ("SomeProperty", "N.D3.SomeProperty", "file2", ((21, 13), (21, 25)),
                  ["member"]);
                 ("( + )", "Microsoft.FSharp.Core.Operators.( + )", "file2",
                  ((16, 14), (16, 15)), ["val"]);
                 ("a", "a", "file2", ((16, 12), (16, 13)), []);
  
negative.code:               [("C", "M.C", "file1", ((3, 5), (3, 6)), ["class"]);
                 ("( .ctor )", "M.C.( .ctor )", "file1", ((3, 5), (3, 6)),
                  ["member"; "ctor"]);
                 ("P", "M.C.P", "file1", ((4, 13), (4, 14)), ["member"; "getter"]);
                 ("x", "x", "file1", ((4, 11), (4, 12)), []);
                 ("( + )", "Microsoft.FSharp.Core.Operators.( + )", "file1",
                  ((6, 12), (6, 13)), ["val"]);
  