code: def val(self):
      """Return the output of the lambda on the system's value in the environment."""
      # pylint: disable=invalid-envvar-value, unpacking-non-sequence
      _, default_fn = self.value
      return default_fn(os.getenv(self.name))
  
imports: from enum import Enum, auto
  import os
label_desc: Use image node_id 1 for calling the ENV obj's underlying member method code with example usage: obj.val() and returns: default_fn