code: func EchoEngine() *echo.Echo {
  	e := echo.New()
  
  	e.GET("/hello", echoHelloHandler())
  	e.GET("/text", echoTextHandler())
  	e.GET("/query", echoQueryHandler())
  
  	e.POST("/form", echoPostFormHandler())
  	e.POST("/json", echoJSONHandler())
  	e.PUT("/update", echoPutHandler())
  	e.DELETE("/delete", echoDeleteHandler())
  
  	e.PATCH("/patch", echoHelloHandler())
  	e.OPTIONS("/options", echoHelloHandler())
  	e.HEAD("/head", echoHelloHandler())
  
  	return e
  }
docs: // EchoEngine is echo router.