code: def run_step(context):
      
      logger.debug("started")
      assert context, f"context must have value for {__name__}"
      deprecated(context)
  
      context.assert_key_has_value('env', __name__)
  
      found_get = env_get(context)
      found_set = env_set(context)
      found_unset = env_unset(context)
  
      # at least 1 of envGet, envSet or envUnset must exist in context
      if not (found_get or found_set or found_unset):
          raise KeyNotInContextError(
              "context must contain any combination of "
              "env['get'], env['set'] or env['unset'] for "
              f"{__name__}")
  
      logger.debug("done")
docs: Get, set, unset $ENVs.
  
      Context is a dictionary or dictionary-like. context is mandatory.
  
      Input context is:
          env:
              get: {dict}
              set: {dict}
              unset: [list]
  
      At least one of env's sub-keys (get, set or unset) must exist.
  
      This step will run whatever combination of Get, Set and Unset you specify.
      Regardless of combination, execution order is Get, Set, Unset.