code: def decode(self, pdu):
          
          if _debug: BSLCI._debug("decode %r", pdu)
  
          # copy the basics
          PCI.update(self, pdu)
  
          self.bslciType = pdu.get()
          if self.bslciType != 0x83:
              raise DecodingError("invalid BSLCI type")
  
          self.bslciFunction = pdu.get()
          self.bslciLength = pdu.get_short()
  
          if (self.bslciLength != len(pdu.pduData) + 4):
              raise DecodingError("invalid BSLCI length")
docs: decode the contents of the PDU into the BSLCI.