package yaml
Set the writer error and return false.
func ( *yaml_emitter_t,  string) bool {
	.error = yaml_WRITER_ERROR
	.problem = 
	return false
}
Flush the output buffer.
func ( *yaml_emitter_t) bool {
	if .write_handler == nil {
		panic("write handler not set")
	}
Check if the buffer is empty.
	if .buffer_pos == 0 {
		return true
	}

	if  := .write_handler(, .buffer[:.buffer_pos]);  != nil {
		return yaml_emitter_set_writer_error(, "write error: "+.Error())
	}
	.buffer_pos = 0
	return true