docs: function normalizeForComparison(pot) {
    var clone = _.cloneDeep(pot);
  
    if (!pot) {
      return pot;
    }
  
    // Normalize the content type case.
    clone.headers['content-type'] = clone.headers['content-type'].toLowerCase();
  
    // Blank out the dates.
    clone.headers['pot-creation-date'] = '';
    clone.headers['po-revision-date'] = '';
  
    // Blank out the headers in the translations object. These are used for
    // reference only and won't be compiled, so they shouldn't be used when
    // comparing POT objects.
    clone.translations['']['']['msgstr'] = '';
  
    return clone;
  }