anchor.diff:  type ``Classic case: matching brackets``() =
       [<Test>]
       member test.``Classic case. Simple test``() =
  -        let qGraph = new ParserInputGraph<_>()
  +        let qGraph = new ParserInputGraph<_>(0, 5)
           qGraph.AddVertexRange[0; 1; 2; 3; 4; 5] |> ignore
           qGraph.AddVerticesAndEdgeRange
               [
  
positive.code: 
      [<Test>]
      member test.``Abstract case. Two parentheses light``() =
          let qGraph = new ParserInputGraph<_>()
          qGraph.AddVertexRange[0; 1; 4; 5; 6; 7] |> ignore
          qGraph.AddVerticesAndEdgeRange
              [createEdge 0 1 (RNGLR.ParseSummator.LBRACE 0)
  
negative.code: 
      [<Test>]
      member test.``Parents test``() =
          let qGraph = new ParserInputGraph<_>(0, 2)
          qGraph.AddVertexRange[0; 1; 2] |> ignore
          qGraph.AddVerticesAndEdgeRange
              [
  