Intent of prefixSumComputer.test|title=Editor ViewModel - PrefixSumComputer remove then insert at same position|occurrence=1

All 3 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 3 tests
- editor/ 3 tests
  - test/ 3 tests
    
    common/ 3 tests
    
    viewModel/ 3 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/editor/test/common/viewModel/prefixSumComputer.test|title=Editor ViewModel - PrefixSumComputer insert then remove|occurrence=1 Inherited prefixSumComputer.ts ×2
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/editor/test/common/viewModel/prefixSumComputer.test|title=Editor ViewModel - PrefixSumComputer remove then insert at same position|occurrence=1 Introduced here
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/editor/test/common/viewModel/prefixSumComputer.test|title=Editor ViewModel - PrefixSumComputer setValue then insert then remove|occurrence=1 Inherited prefixSumComputer.test|title=Editor ViewModel - PrefixSumComputer setValue then insert then remove|occurrence=1