function baseBindAll(object, methodNames) {
      var index = -1,
          length = methodNames.length;

      while (++index < length) {
        var key = methodNames[index];
        object[key] = createWrapper(object[key], BIND_FLAG, object);
      }
      return object;
    }
The base implementation of `_.bindAll` without support for individual
method name arguments.

@private
@param {Object} object The object to bind and assign the bound methods to.
@param {string[]} methodNames The object method names to bind.
@returns {Object} Returns `object`.