code: def pack_multiple(messages):
          
          data = b""
          msg_count = len(messages)
          for i, msg in enumerate(messages):
              if i == msg_count - 1:
                  msg['next_entry_offset'] = 0
              else:
                  # because the end padding val won't be populated if the entry
                  # offset is 0, we set to 1 so the len calc is correct
                  msg['next_entry_offset'] = 1
                  msg['next_entry_offset'] = len(msg)
              data += msg.pack()
  
          return data
docs: Converts a list of SMB2CreateEABuffer structures and packs them as a
          bytes object used when setting to the SMB2CreateContextRequest
          buffer_data field. This should be used as it would calculate the
          correct next_entry_offset field value for each buffer entry.
  
          :param messages: List of SMB2CreateEABuffer structures
          :return: bytes object that is set on the SMB2CreateContextRequest
              buffer_data field.