import { Injectable } from '@nestjs/common' ; @ Injectable ( ) export class RoleGuardService { fetch ( id ) { return `Hello World! ${ id }` ; } save ( message ) { return `Set Hello Done.${ message }` ; } update ( id , message ) { return `Update Hello Done. ${ id }：${ message }` ; } remove ( id ) { return `${ id } Record Was Removed.` ; } }