private Map<String, Boolean> getRoots(FileCollection files) {
Map<String, Boolean> roots = new HashMap<String, Boolean>();
for (File file : files.getFiles()) {
roots.put(stringInterner.intern(file.getAbsolutePath()), file.exists());
}
return roots;
}
private String getInternedAbsolutePath(File file, StringInterner stringInterner) {
return stringInterner.intern(file.getAbsolutePath());
}