code: def get_target(self, offset, extended_arg=0):
          
          inst = self.get_inst(offset)
          if inst.opcode in self.opc.JREL_OPS | self.opc.JABS_OPS:
              target = inst.argval
          else:
              # No jump offset, so use fall-through offset
              target = next_offset(inst.opcode, self.opc, inst.offset)
          return target
docs: Get next instruction offset for op located at given <offset>.
          NOTE: extended_arg is no longer used