@Test
    public void cannotPopMoreStatesThanExist() {
        Assertions.assertThrows(IllegalStateException.class, () -> {
            new SimpleCodeWriter()
                    .pushState()
                    .popState()
                    .popState();
        });
    }
\n     * This is some docs.\n     * And more docs.\n     *\n     * Foo.\n
smithy-utils/src/test/java/software/amazon/smithy/utils/SimpleCodeWriterTest.java