public function getPkValue()
	{
		return isset($this->attributes[$this->getPrimaryKey()]) ? $this->attributes[$this->getPrimaryKey()] : null;
	}
public function getPkValue()
	{
		return isset($this->attributes[$this->getPrimaryKey()]) ? $this->attributes[$this->getPrimaryKey()] : null;
	}
public function getPkValue ( ) { return isset ( $ this -> attributes [ $ this -> getPrimaryKey ( ) ] ) ? $ this -> attributes [ $ this -> getPrimaryKey ( ) ] : null ; }
Gets the value of the primary key

@return  mixed
@since   2.0.0
Gets the value of the primary key