function chain(value) {
        var result = lodash(value);
        result.__chain__ = true;
        return result;
      }
Creates a `lodash` wrapper instance that wraps `value` with explicit method
chain sequences enabled. The result of such sequences must be unwrapped
with `_#value`.

@static
@memberOf _
@since 1.3.0
@category Seq
@param {*} value The value to wrap.
@returns {Object} Returns the new `lodash` wrapper instance.
@example

var users = [
  { 'user': 'barney',  'age': 36 },
  { 'user': 'fred',    'age': 40 },
  { 'user': 'pebbles', 'age': 1 }
];

var youngest = _
  .chain(users)
  .sortBy('age')
  .map(function(o) {
    return o.user + ' is ' + o.age;
  })
  .head()
  .value();
// => 'pebbles is 1'