before refactor index store to complex file-line pattern

.vscode/launch.json

@@ -60,6 +60,18 @@
             "args": [],
             "showLog": true,
             "console": "integratedTerminal"
+        },
+        {
+            "name": "Debug LineDB Perf Example",
+            "type": "go",
+            "request": "launch",
+            "mode": "auto",
+            "program": "${workspaceFolder}/examples/perf/main.go",
+            "cwd": "${workspaceFolder}",
+            "env": {},
+            "args": [],
+            "showLog": true,
+            "console": "integratedTerminal"
         }
     ]
 }