/**
* Returns the base (root) field map
* @return null|epFieldMap
*/
protected function &getBase()
{
// return cached one
if ($this->base) {
return $this->base;
}
// class map exists?
if (!$this->class_map) {
return self::$false;
}
// get the base
if (!($this->base = $this->class_map->getBaseField($this->name))) {
$this->base = $this;
}
return $this->base;
}
