public function addNode( $className, array $info )
    {
        $this->nodes[$className] = $info;
        $this->leaves[] = $className;
    }
public function addNode( $className, array $info )
    {
        $this->nodes[$className] = $info;
        $this->leaves[] = $className;
    }
public function addNode ( $ className , array $ info ) { $ this -> nodes [ $ className ] = $ info ; $ this -> leaves [ ] = $ className ; }
Add node to the graph

@param string $className
@param array $info
@return void
Add node to the graph