def comments=(val)
      if val.respond_to?(:collect)
        @comments = val.map(&:to_s)
      elsif val.respond_to?(:to_s)
        @comments = [val.to_s]
      end
    end
def comments=(val)
      if val.respond_to?(:collect)
        @comments = val.map(&:to_s)
      elsif val.respond_to?(:to_s)
        @comments = [val.to_s]
      end
    end
Set comments
 @param val [Array/String]