public boolean remove(int vertex) {
        EdgeSet<T> edges = vertexToEdges.remove(vertex);
        if (edges == null)
            return false;
        // Call the internal remove method to perform the remaining
        // removal logic.
        removeInternal(vertex, edges);
        return true;
    }
public boolean remove ( int vertex ) { EdgeSet < T > edges = vertexToEdges . remove ( vertex ) ; if ( edges == null ) return false ; removeInternal ( vertex , edges ) ; return true ; }
{@inheritDoc}