holder.set(oldValue);
          return updaterFunction.applyAsLong(oldValue);
        });
    return holder.get();
  }

  /**
   * Updates the value currently associated with {@code key} by combining it with {@code x} via the
   * specified accumulator function, returning the new value. The previous value associated with
   * {@code key} (or zero, if there is none) is passed as the first argument to {@code

    public void test_args_empty() {
        PythonJob result = pythonJob.args();

        assertSame(pythonJob, result);
        assertTrue(pythonJob.argList.isEmpty());
    }

    // Test combining arg and args methods
    public void test_arg_and_args_combination() {
        pythonJob.arg("single1").args("multi1", "multi2").arg("single2").args("multi3");

        assertEquals(5, pythonJob.argList.size());