@Override
		public boolean hasNext() throws ConcurrentModificationException {
			if (setModificationNumber != getModificationNumber()) {
				throw new ConcurrentModificationException("Set Modified");
			}

			if (nextPosition < capacity()) {
				return true;
			}
			return false;
		}
Return true if there is another vertex in this iteration.
@throws ConcurrentModificationException if the VertexSet is 
modified by methods outside this iterator.
Ghidra/Framework/Generic/src/main/java/ghidra/util/graph/VertexSet.java