public void sendSetupWorkspaceRequest(String fileURI) {
        commandService.executeClientCommand(new ExecuteCommandParams("vespaSchemaLS.commands.schema.setupWorkspace", List.of(fileURI)));
    }
Singleton to interface the Schema Language server through the client.
integration/schema-language-server/lemminx-vespa/src/main/java/ai/vespa/lemminx/command/SchemaLSCommands.java