code: def env():
      
  
      if cij.ssh.env():
          cij.err("cij.nvm.env: invalid SSH environment")
          return 1
  
      nvm = cij.env_to_dict(PREFIX, REQUIRED)
  
      if "nvme" in nvm["DEV_NAME"]:
          nvm["DEV_PATH"] = "/dev/%s" % nvm["DEV_NAME"]
      else:
          nvm["DEV_PATH"] = "traddr:%s" % nvm["DEV_NAME"]
  
      cij.env_export(PREFIX, EXPORTED, nvm)
  
      return 0
docs: Verify NVME variables and construct exported variables