Coalesce
Generated from the engine's own definition: compute-engine's symbol, which we neither extend nor document by hand. No examples yet — the crosswalk is the reason it has a page.
Return the first operand that is not ABSENT (`Missing` or `NaN`), evaluated left-to-right. If every operand is absent, the last operand’s value is returned verbatim (still absent).
Coalesce(any+) -> unknownas compute-engine declares it