code: function lastIndexOf(array, value, fromIndex) {
      var index = array ? array.length : 0;
      if (typeof fromIndex == 'number') {
        index = (fromIndex < 0 ? nativeMax(0, index + fromIndex) : nativeMin(fromIndex, index - 1)) + 1;
      }
      while (index--) {
        if (array[index] === value) {
          return index;
        }
      }
      return -1;
    }
docs: Gets the index at which the last occurrence of `value` is found using strict
  equality for comparisons, i.e. `===`. If `fromIndex` is negative, it is used
  as the offset from the end of the collection.
  
  If a property name is provided for `callback` the created "_.pluck" style
  callback will return the property value of the given element.
  
  If an object is provided for `callback` the created "_.where" style callback
  will return `true` for elements that have the properties of the given object,
  else `false`.
  
  @static
  @memberOf _
  @category Arrays
  @param {Array} array The array to search.
  @param {*} value The value to search for.
  @param {number} [fromIndex=array.length-1] The index to search from.
  @returns {number} Returns the index of the matched value or `-1`.
  @example
  
  _.lastIndexOf([1, 2, 3, 1, 2, 3], 2);
  // => 4
  
  _.lastIndexOf([1, 2, 3, 1, 2, 3], 2, 3);
  // => 1