public function check()
{
$params = $this->getBindParamPos();
foreach ($this->method_args as $id => $arg) {
list($name, $is_ref, $is_optional, $default) = $arg;
if (false === array_search($id, $params)) {
Verify::isTrue($is_optional, "{$this->ins->class}::{$this->method_name} param: {$name} not be bound");
}
}
}