code: function removeSingleArrays(obj) {
    // Traverse all the elements of the object
    traverse(obj).forEach(function traversing(value) {
      // As the XML parser returns single fields as arrays.
      if (value instanceof Array && value.length === 1) {
        this.update(value[0]);
      }
    });
  }
docs: Removes all the arrays with single elements with a string value.
  @param {object} o is the object to be traversed.