code: function parseSimpleInline(parse, content, state) {
    const isCurrentlyInline = state.inline || false;
    const isCurrentlySimple = state.simple || false;
    state.inline = false;
    state.simple = true;
    const result = parse(content, state);
    state.inline = isCurrentlyInline;
    state.simple = isCurrentlySimple;
    return result;
  }
docs: Anything inline that isn't a link.