@Test
    public void newlineCanBeLotsOfCharacters() {
        SimpleCodeWriter writer = new SimpleCodeWriter()
                .insertTrailingNewline()
                .setNewline("HELLO_THIS_IS_A_NEWLINE!!!");
        String result = writer
                .write("Hi.")
                .write("There.")
                .toString();

        assertThat(result, equalTo("Hi.HELLO_THIS_IS_A_NEWLINE!!!There.HELLO_THIS_IS_A_NEWLINE!!!"));
    }
\n"
                                + " * Foo \"foo!\"\n"
                                + " *\n"
                                + " * \"baz\"!\n"
                                + " * Yap!\n"
                                + " *     This is indented, in flow of parent.\n"
                                + " *     Yap!\n"
                                + " *     Yap?\n"
                                + " *     # Has a prefix\n"
                                + " *     # Yes\n"
                                + "
smithy-utils/src/test/java/software/amazon/smithy/utils/SimpleCodeWriterTest.java