code: func yaml_emitter_write_bom(emitter *yaml_emitter_t) bool {
  	if !flush(emitter) {
  		return false
  	}
  	pos := emitter.buffer_pos
  	emitter.buffer[pos+0] = '\xEF'
  	emitter.buffer[pos+1] = '\xBB'
  	emitter.buffer[pos+2] = '\xBF'
  	emitter.buffer_pos += 3
  	return true
  }
docs: // Write the BOM character.