<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\begin{sequencediagram}
  \newthread{t}{:Thread}
  \newinst{a}{:A}
  \newinst{b}{:B}

  \begin{call}{t}{funcA()}{a}{return}
    \begin{call}{a}{funcA()}{b}{return}
    \end{call}
  \end{call}
\end{sequencediagram}</pre></body></html>