                            -------------------------- >eis_object<-----------------------
                            |                                                             |
                            |                                                             |
                            |                                                             |
                            |                                                             |
                            |inherits-from                                                |inherits-from
                            |                                                             |
                            |                                                             |
                            |                                                             |
                            |                           has-a                             |
                      eis_ccsds_packet<------------------------------------------         |
                                                                                 |        |
                                                                                 |        |
                                                                  -------------->eis_ccsds_interface
                                                                  |                                
								  |                                
								  |                                

^                 ^
|                 |
eis_ccsds_reader  eis_ccsds_writer


eis_ccsds_packet
      *
      | has-a
      |
eis_ccsds_interface
