{ "jsonrpc": "2.0", "id": 1, "method": "initialize", "params": { "processId": 0, "clientInfo": { "name": "test-harness", "version": "1.0.0" }, "rootUri": null, "capabilities": { "textDocument": { "synchronization": { "dynamicRegistration": true, "willSave": true, "willSaveWaitUntil": true, "didSave": true } } } } }