core/src/in/srain/cube/diskcache/CacheEntry.java
public boolean delete() throws IOException {
        if (mIsUnderEdit) {
            throw new IOException("Try to delete an cache entry that has been being editing.");
        }
        FileUtils.deleteIfExists(getCacheFile());
        FileUtils.deleteIfExists(getTempFile());
        return true;
    }
public boolean delete() throws IOException {
        if (mIsUnderEdit) {
            throw new IOException("Try to delete an cache entry that has been being editing.");
        }
        FileUtils.deleteIfExists(getCacheFile());
        FileUtils.deleteIfExists(getTempFile());
        return true;
    }
delete all content

@return