code: function one(node) {
          var children = node.children;
          var length = children.length;
          var index = -1;
          var languages;
          var child;
          var dictionary = {};
          var tuple;
  
          while (++index < length) {
              child = children[index];
              languages = child.data && child.data.languages;
  
              if (languages) {
                  tuple = languages[0];
  
                  if (tuple[0] in dictionary) {
                      dictionary[tuple[0]] += tuple[1];
                  } else {
                      dictionary[tuple[0]] = tuple[1];
                  }
              }
          }
  
          return sortDistanceObject(dictionary);
      }
docs: Patch one parent.
  
  @param {NLCSTParentNode} node - Parent
  @return {Array.<Array.<string, number>>} - Language
  map.