public function GetPrimaryKeyMap($objectclass)
	{
		$fms = $this->GetFieldMaps($objectclass);
		foreach ($fms as $fm)
		{
			if ($fm->IsPrimaryKey)
			{
				return $fm;
			}
		}
	}
public function GetPrimaryKeyMap($objectclass)
	{
		$fms = $this->GetFieldMaps($objectclass);
		foreach ($fms as $fm)
		{
			if ($fm->IsPrimaryKey)
			{
				return $fm;
			}
		}
	}
public function GetPrimaryKeyMap ( $ objectclass ) { $ fms = $ this -> GetFieldMaps ( $ objectclass ) ; foreach ( $ fms as $ fm ) { if ( $ fm -> IsPrimaryKey ) { return $ fm ; } } }
Return the KeyMap for the primary key for the given object class

@access public
@param string $objectclass the type of object
@return KeyMap object
Return the KeyMap for the primary key for the given object class