# File lib/snmp/pdu.rb, line 45
      def decode_version(data)
        version_data, remainder = decode_integer(data)
        if version_data == SNMP_V1
          version = :SNMPv1
        elsif version_data == SNMP_V2C
          version = :SNMPv2c
        else
          raise UnsupportedVersion, version_data.to_s
        end
        return version, remainder
      end