code: def is_jump_forward(self, offset):
          
          opname = self.get_inst(offset).opname
          if opname == 'JUMP_FORWARD':
              return True
          if opname != 'JUMP_ABSOLUTE':
              return False
          return offset < self.get_target(offset)
docs: Return True if the code at offset is some sort of jump forward.
          That is, it is ether "JUMP_FORWARD" or an absolute jump that
          goes forward.