code: def save
        return false unless valid?
  
        self.last_result_set = if persisted?
          self.class.requestor.update(self)
        else
          self.class.requestor.create(self)
        end
  
        if last_result_set.has_errors?
          fill_errors
          false
        else
          self.errors.clear if self.errors
          mark_as_persisted!
          if updated = last_result_set.first
            self.attributes = updated.attributes
            self.links.attributes = updated.links.attributes
            self.relationships.attributes = updated.relationships.attributes
            clear_changes_information
          end
          true
        end
      end
docs: Commit the current changes to the resource to the remote server.
   If the resource was previously loaded from the server, we will
   try to update the record. Otherwise if it's a new record, then
   we will try to create it
  
   @return [Boolean] Whether or not the save succeeded