code: protected function validateResource(): bool
      {
          $identifier = $this->validateTypeAndId();
          $attributes = $this->validateAttributes();
          $relationships = $this->validateRelationships();
  
          if ($attributes && $relationships) {
              return $this->validateAllFields() && $identifier;
          }
  
          return $identifier && $attributes && $relationships;
      }
docs: Validate the resource object.
  
  @return bool