@Override public List<Path> listFiles() { final DirectoryStream<org.uberfire.java.nio.file.Path> stream = ioService.newDirectoryStream( root, new DirectoryStream.Filter<org.uberfire.java.nio.file.Path>() { @Override public boolean accept(org.uberfire.java.nio.file.Path entry) throws IOException { return typeDefinition.accept(Paths.convert(entry)); } }); final List<Path> files = new ArrayList<Path>(); final Iterator<org.uberfire.java.nio.file.Path> itr = stream.iterator(); while (itr.hasNext()) { files.add(Paths.convert(itr.next())); } return files; }