dotfiles/dot_vim/plugged/vimtex/test/test-completion-environments/test3.sty

\newenvironment{test3Simple}{a}{b}

\newenvironment{test3Boxed}
{\begin{center}
    \begin{tabular}{|p{0.9\textwidth}|}
      \hline\\
    }
    {
      \\\\\hline
    \end{tabular}
  \end{center}
}