/**
* Moves node to be first child of $parent
*
* @param sfBreadNav $parent Propel object for destination node
* @param PropelPDO $con Connection to use.
* @return sfBreadNav The current object (for fluent API support)
*/
public function moveToFirstChildOf(NodeObject $parent, PropelPDO $con = null)
{
if ($this->isNew()) {
throw new PropelException("sfBreadNav must exist in tree.");
}
sfBreadNavPeer::moveToFirstChildOf($parent, $this, $con);
return $this;
}