private void findNext() {
		while (it.hasNext()) {
			Address addr = it.next();
			if (listing.getComment(commentType, addr) != null) {
				nextAddr = addr;
				break;
			}
		}
	}
Constructs a new CommentTypeFilterAddressIterator
@param it an address iterator whose items are tested for the comment type.
@param commentType the type of comment to search for.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/code/CommentTypeFilterAddressIterator.java