I broke up with neovim....vim is my best friend now

dot_vim/plugged/vimtex/test/test-toc/test-beamer.tex

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+\documentclass{beamer}
+\usepackage[T1]{fontenc}
+\usepackage[utf8]{inputenc}
+
+\title{Example}
+\author{Karl Yngve Lervåg}
+\date{\today}
+
+\begin{document}
+
+\begin{frame}{Outline}
+  \tableofcontents
+\end{frame}
+
+\section{Introduction}
+\begin{frame}{Introduction}
+  Intro slide
+\end{frame}
+
+\section{Titles and subtitles}
+\begin{frame}{A title here}{Subtitle}
+  Another frame.
+\end{frame}
+
+\section{Conclusion}
+\begin{frame}{A title here}
+  One more frame.
+\end{frame}
+\begin{frame}{Finito}
+  That's all, folks.
+\end{frame}
+\begin{frame}[fragile]{Finito again}
+  That's all, folks.
+\end{frame}
+
+\end{document}