function replace() {
      var args = arguments,
          string = toString(args[0]);

      return args.length < 3 ? string : string.replace(args[1], args[2]);
    }
Replaces matches for `pattern` in `string` with `replacement`.

**Note:** This method is based on
[`String#replace`](https://mdn.io/String/replace).

@static
@memberOf _
@since 4.0.0
@category String
@param {string} [string=''] The string to modify.
@param {RegExp|string} pattern The pattern to replace.
@param {Function|string} replacement The match replacement.
@returns {string} Returns the modified string.
@example

_.replace('Hi Fred', 'Fred', 'Barney');
// => 'Hi Barney'