src/Type/Definition/ObjectType.php
public function hasField($name)
    {
        if ($this->fields === null) {
            $this->getFields();
        }

        return isset($this->fields[$name]);
    }
public function hasField($name)
    {
        if ($this->fields === null) {
            $this->getFields();
        }

        return isset($this->fields[$name]);
    }
public function hasField ( $ name ) { if ( $ this -> fields === null ) { $ this -> getFields ( ) ; } return isset ( $ this -> fields [ $ name ] ) ; }
@param string $name

@return bool
@param string $name