public static Iterable<DomainFile> descendantFiles(DomainFolder folder) {
		return () -> new DomainFileIterator(folder);
	}
Returns a {@link Iterable} sequence of all the {@link DomainFile}s that exist under
the specified {@link DomainFolder folder}.

@param folder
@return
Ghidra/Framework/Project/src/main/java/ghidra/framework/model/ProjectDataUtils.java