func (builder *SSMLTextBuilder) AppendAudio(src string) *SSMLTextBuilder {
	builder.buffer.WriteString(fmt.Sprintf("<audio src=\"%s\"/>", src))
	return builder
}
AppendAudio will append the playback of an MP3 file to the response. The audio playback
will take place at the specific point in the text to speech response.
package skillserver
import (
	"bytes"
	"fmt"
)
type SSMLTextBuilder struct {
	buffer *bytes.Buffer
}
type WordRole string
const (
	PresentSimple WordRole = "amazon:VB"
	PastParticle WordRole = "amazon:VBD"
	Noun WordRole = "amazon:NN"
	AlternateSense WordRole = "amazon:SENSE_1"
)
type PhoneticAlphabet string
const (
	Ipa PhoneticAlphabet = "ipa"
	XSampa PhoneticAlphabet = "x-sampa"
)
func NewSSMLTextBuilder() *SSMLTextBuilder {
	return &SSMLTextBuilder{bytes.NewBufferString("")}
}
func (builder *SSMLTextBuilder) AppendPlainSpeech(text string) *SSMLTextBuilder {
	builder.buffer.WriteString(text)
	return builder
}
func (builder *SSMLTextBuilder) AppendAmazonEffect(text, name string) *SSMLTextBuilder {
	builder.buffer.WriteString(fmt.Sprintf("<amazon:effect name=\"%s\">%s</amazon:effect>", name, text))
	return builder
}