code: function validate(options) {
      const schema = joi.object().keys({
          config: joi.array().min(_.keys(options.models).length).required(),
          acl: joi.object().required(),
          models: joi.object().required()
      });
      joi.assert(options, schema, 'Invalid Shield Options:');
      return true;
  }
docs: Validate that the all inputs are properly specified