function thru(value, interceptor) {
      return interceptor(value);
    }
This method is like `_.tap` except that it returns the result of `interceptor`.
The purpose of this method is to "pass thru" values replacing intermediate
results in a method chain sequence.

@static
@memberOf _
@since 3.0.0
@category Seq
@param {*} value The value to provide to `interceptor`.
@param {Function} interceptor The function to invoke.
@returns {*} Returns the result of `interceptor`.
@example

_('  abc  ')
 .chain()
 .trim()
 .thru(function(value) {
   return [value];
 })
 .value();
// => ['abc']