validate_data

# File lib/net/imap.rb, line 1224
    def validate_data(data)
      case data
      when nil
      when String
      when Integer
        if data < 0 || data >= 4294967296
          raise DataFormatError, num.to_s
        end
      when Array
        data.each do |i|
          validate_data(i)
        end
      when Time
      when Symbol
      else
        data.validate
      end
    end