function pickByCallback(object, predicate) {
	      var result = {};
	      baseForIn(object, function(value, key, object) {
	        if (predicate(value, key, object)) {
	          result[key] = value;
	        }
	      });
	      return result;
	    }
A specialized version of `_.pick` which picks `object` properties `predicate`
returns truthy for.

@private
@param {Object} object The source object.
@param {Function} predicate The function invoked per iteration.
@returns {Object} Returns the new object.