validateValue(value) {
        return true;
      }
Validates the value.

Override to add your custom validation logic specific for the tag.
Per-item, per-region and per-object validation will be applied automatically.

@example
SomeModel.actions(self => {
    const Super = { validateValue: self.validateValue };

    return {
      validateValue(value) {
        if (!Super.validateValue(value)) return false;
        // your validation logic
      }
      // other actions
    }
});

@param {*} value - The value to be validated.
@returns {boolean}