server.go
func (ctx *RequestCtx) SetContentType(contentType string) {
	ctx.Response.Header.SetContentType(contentType)
}
func (ctx *RequestCtx) SetContentType(contentType string) {
	ctx.Response.Header.SetContentType(contentType)
}
func ( ctx * RequestCtx ) SetContentType ( contentType string ) { ctx . Response . Header . SetContentType ( contentType ) }
// SetContentType sets response Content-Type.
SetContentType sets response Content - Type .