Intent of pfs.ts ×1

All 7 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 7 tests
- base/ 7 tests
  - test/ 7 tests
    
    node/ 7 tests
    
    pfs/ 5 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/pfs/pfs.test|title=PFS copy handles symbolic links when the reference is inside source|occurrence=1 Inherited pfs.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/pfs/pfs.test|title=PFS copy, rename and delete|occurrence=1 Inherited pfs.test|title=PFS rename without retry|occurrence=1, pfs.test|title=PFS copy, rename and delete|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/pfs/pfs.test|title=PFS readDirsInDir|occurrence=1 Inherited pfs.ts ×3
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/pfs/pfs.test|title=PFS readdir|occurrence=1 Inherited pfs.test|title=PFS readdir|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/pfs/pfs.test|title=PFS rename without retry|occurrence=1 Inherited pfs.test|title=PFS rename without retry|occurrence=1, pfs.test|title=PFS copy, rename and delete|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/snapshot.test|title=snapshot cleans up old snapshots|occurrence=1 Inherited snapshot.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/node/snapshot.test|title=snapshot creates a snapshot|occurrence=1 Inherited snapshot.test|title=snapshot creates a snapshot|occurrence=1