Overleaf/services/clsi/test/acceptance/fixtures/examples/biber_bibliography/main.tex

\documentclass{article}

\usepackage[backend=biber]{biblatex}
\addbibresource{bibliography.bib}

\begin{document}

The meaning of life, the universe and everything is 42 \cite{DouglasAdams}

\printbibliography

\end{document}