code: public function forget(string ...$fields): self
      {
          $copy = clone $this;
          $copy->attributes = $this->getAttributes()->forget($fields)->all();
          $copy->relationships = $this->getRelationships()->forget($fields)->all();
          $copy->normalize();
  
          return $copy;
      }
docs: Return a new instance with the supplied attribute/relationship fields removed.
  
  @param string ...$fields
  @return ResourceObject