function isArguments(value) {
      return value && typeof value == 'object' && typeof value.length == 'number' &&
        toString.call(value) == argsClass || false;
    }
Checks if `value` is an `arguments` object.

@static
@memberOf _
@category Objects
@param {*} value The value to check.
@returns {boolean} Returns `true` if the `value` is an `arguments` object, else `false`.
@example

(function() { return _.isArguments(arguments); })(1, 2, 3);
// => true

_.isArguments([1, 2, 3]);
// => false