docs: function isString(value, message, id) {
      if (message === void 0) { message = ''; }
      if (id === void 0) { id = ''; }
      if (this.enabled && !(typeof value === 'string' || value instanceof String)) {
          throw TypeException.unexpectedType(assertionTypes.IS_STRING, value, '<string>', message, id);
      }
  }