code: func (builder *SSMLTextBuilder) AppendAmazonEffect(text, name string) *SSMLTextBuilder {
  
  	builder.buffer.WriteString(fmt.Sprintf("<amazon:effect name=\"%s\">%s</amazon:effect>", name, text))
  
  	return builder
  }
docs: // AppendAmazonEffect will add a new speech string with the provided effect name.
  // Check the SSML reference page for a list of available effects.