@Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((resourceId == null) ? 0 : resourceId.hashCode());
        result = prime * result + (int) (started ^ (started >>> 32));
        return result;
    }
@return elapsed milliseconds this the start of processing of this
file resource
tika-batch/src/main/java/org/apache/tika/batch/FileStarted.java