code: def parse(self, instr):
          
          try:
              instr_lower = instr.lower()
  
              if instr_lower not in self._cache:
                  instr_asm = instruction.parseString(instr_lower)[0]
  
                  self._cache[instr_lower] = instr_asm
  
              instr_asm = copy.deepcopy(self._cache[instr_lower])
  
              # self._check_instruction(instr_asm)
          except Exception:
              instr_asm = None
  
              error_msg = "Failed to parse instruction: %s"
  
              logger.error(error_msg, instr, exc_info=True)
  
          return instr_asm
docs: Parse an x86 instruction.