The finally audit log

Write tryResource(boolean fail) that appends to a StringBuilder exactly: "open;" always; then, if fail is true, throw IllegalStateException; otherwise append "work;" then "close;". Add "catch;" in a catch block and "finally;" in a finally block. Return the log **once, at the very end** - after the finally block (a return inside try/catch escapes before finally can append).

Difficulty: advanced