Intent of ast.ts ×5

All 6 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 6 tests
- editor/ 6 tests
  - test/ 6 tests
    
    common/ 6 tests
    
    model/ 6 tests
    
    bracketPairColorizer/ 6 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/editor/test/common/model/bracketPairColorizer/concat23Trees.test|title=Bracket Pair Colorizer - mergeItems Clone|occurrence=1 Inherited concat23Trees.test|title=Bracket Pair Colorizer - mergeItems Clone|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/editor/test/common/model/bracketPairColorizer/concat23Trees.test|title=Bracket Pair Colorizer - mergeItems Different Height Lists 1|occurrence=1 Inherited concat23Trees.ts ×6
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/editor/test/common/model/bracketPairColorizer/concat23Trees.test|title=Bracket Pair Colorizer - mergeItems Different Height Lists 2|occurrence=1 Inherited concat23Trees.ts ×6
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/editor/test/common/model/bracketPairColorizer/concat23Trees.test|title=Bracket Pair Colorizer - mergeItems Different Height Lists 3|occurrence=1 Inherited concat23Trees.ts ×4
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/editor/test/common/model/bracketPairColorizer/concat23Trees.test|title=Bracket Pair Colorizer - mergeItems Empty List|occurrence=1 Inherited ast.ts ×2
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/editor/test/common/model/bracketPairColorizer/concat23Trees.test|title=Bracket Pair Colorizer - mergeItems Same Height Lists|occurrence=1 Inherited concat23Trees.ts ×1