src/ORM/FieldType/DBComposite.php
public function exists()
    {
        // By default all fields
        foreach ($this->compositeDatabaseFields() as $field => $spec) {
            $fieldObject = $this->dbObject($field);
            if (!$fieldObject->exists()) {
                return false;
            }
        }
        return true;
    }
public function exists()
    {
        // By default all fields
        foreach ($this->compositeDatabaseFields() as $field => $spec) {
            $fieldObject = $this->dbObject($field);
            if (!$fieldObject->exists()) {
                return false;
            }
        }
        return true;
    }
public function exists ( ) { // By default all fields foreach ( $ this -> compositeDatabaseFields ( ) as $ field => $ spec ) { $ fieldObject = $ this -> dbObject ( $ field ) ; if ( ! $ fieldObject -> exists ( ) ) { return false ; } } return true ; }
Composite field defaults to exists only if all fields have values

@return boolean
Composite field defaults to exists only if all fields have values