http.go
func (resp *Response) AppendBodyString(s string) {
	resp.closeBodyStream()
	resp.bodyBuffer().WriteString(s)
}
func (resp *Response) AppendBodyString(s string) {
	resp.closeBodyStream()
	resp.bodyBuffer().WriteString(s)
}
func ( resp * Response ) AppendBodyString ( s string ) { resp . closeBodyStream ( ) resp . bodyBuffer ( ) . WriteString ( s ) }
// AppendBodyString appends s to response body.
AppendBodyString appends s to response body .