public int getNumberOfOutputGroupVertices() {

		int retVal = 0;

		final Iterator<ManagementGroupVertex> it = this.groupVertices.iterator();
		while (it.hasNext()) {
			if (it.next().isOutputVertex()) {
				++retVal;
			}
		}

		return retVal;
	}
public int getNumberOfOutputGroupVertices ( ) { int retVal = 0 ; final Iterator < ManagementGroupVertex > it = this . groupVertices . iterator ( ) ; while ( it . hasNext ( ) ) { if ( it . next ( ) . isOutputVertex ( ) ) { ++ retVal ; } } return retVal ; }
Returns the number of output group vertices in this stage. Output group vertices are those vertices which have
outgoing edges to group vertices of a higher stage.

@return the number of output group vertices in this stage