code: private Collection<Directory> collectExistingRoots(final Directory pNewRoot) {
          final Path parentPath = pNewRoot.getPath();
          final Collection<Directory> pathsToRebase = new LinkedList<>();
          dirs.entrySet().forEach(e -> {
              final Path childPath = e.getKey();
              if (childPath.startsWith(parentPath) && e.getValue().isRoot()) {
                  pathsToRebase.add(e.getValue());
              }
          });
          return pathsToRebase;
      }
docs: Collects all existing root directories which are children of the new root directory specified specified.
  
  @param pNewRoot New root directory to match, must not be {@code null}
  @return Collection of directories, never {@code null}.