<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\begin{tikzpicture}
  \begin{abstractclass}[text width=5cm]{BankAccount}{0,0}
    \attribute{owner : String}
    \attribute{balance : Dollars = 0}

    \operation{deposit(amount : Dollars)}
    \operation[0]{withdrawl(amount : Dollars)}
  \end{abstractclass}
\end{tikzpicture}</pre></body></html>