2019-07-05 vscode 插件开发

通过设置java.trace.server变量，我们能在控制台看到VScode与Language Server交互的具体信息。
vscode 窗口启动时会同时启动server

textDocument/definition 中转到定义出
textDocument/definition
vscode-xml client端
https://github.com/angelozerr/lsp4xml

https://github.com/georgewfraser/java-language-server
https://github.com/vuejs/vetur/tree/120779428bfc805c92f8d067fd52dfaa11ed007b

https://microsoft.github.io/language-server-protocol/implementors/servers/
https://github.com/tmrdh/symfony-helper/blob/51b69b045788b4c8dc0dd49f08efdf67186ff3e0/test/server/_utils.ts