Intent of rpcProtocol.test|title=RPCProtocol issue #81424: SerializeRequest should throw if an argument can not be serialized|occurrence=1

All 8 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 8 tests
- workbench/ 8 tests
  - services/ 8 tests
    
    extensions/ 8 tests
    
    test/ 8 tests
    
    common/ 8 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/services/extensions/test/common/rpcProtocol.test|title=RPCProtocol error promise|occurrence=1 Inherited rpcProtocol.ts ×3
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/services/extensions/test/common/rpcProtocol.test|title=RPCProtocol issue #60450: Converting circular structure to JSON|occurrence=1 Inherited rpcProtocol.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/services/extensions/test/common/rpcProtocol.test|title=RPCProtocol issue #72798: null errors are hard to digest|occurrence=1 Inherited errors.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/services/extensions/test/common/rpcProtocol.test|title=RPCProtocol issue #81424: SerializeRequest should throw if an argument can not be serialized|occurrence=1 Introduced here
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/services/extensions/test/common/rpcProtocol.test|title=RPCProtocol returning a buffer|occurrence=1 Inherited rpcProtocol.ts ×4
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/services/extensions/test/common/rpcProtocol.test|title=RPCProtocol simple call without result|occurrence=1 Inherited rpcProtocol.ts ×3
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/services/extensions/test/common/rpcProtocol.test|title=RPCProtocol simple call|occurrence=1 Inherited rpcProtocol.test|title=RPCProtocol simple call|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/services/extensions/test/common/rpcProtocol.test|title=RPCProtocol throwing an error|occurrence=1 Inherited rpcProtocol.ts ×1