def syncing=(syncing)
      validator = EnumAttributeValidator.new('String', ["starting", "already_started"])
      unless validator.valid?(syncing)
        fail ArgumentError, "invalid value for 'syncing', must be one of #{validator.allowable_values}."
      end
      @syncing = syncing
    end
def syncing=(syncing)
      validator = EnumAttributeValidator.new('String', ["starting", "already_started"])
      unless validator.valid?(syncing)
        fail ArgumentError, "invalid value for 'syncing', must be one of #{validator.allowable_values}."
      end
      @syncing = syncing
    end
Custom attribute writer method checking allowed values (enum).
 @param [Object] syncing Object to be assigned