function functions(object) {
      var result = [];
      forIn(object, function(value, key) {
        if (isFunction(value)) {
          result.push(key);
        }
      });
      return result.sort();
    }
Creates a sorted array of property names of all enumerable properties,
own and inherited, of `object` that have function values.

@static
@memberOf _
@alias methods
@category Objects
@param {Object} object The object to inspect.
@returns {Array} Returns an array of property names that have function values.
@example

_.functions(_);
// => ['all', 'any', 'bind', 'bindAll', 'clone', 'compact', 'compose', ...]