Member predicate ConstexprIfStmt :: getElse
Gets the ‘else’ statement of this ‘constexpr if’ statement, if any.
For example, for
if constexpr (b) { x = 1; } else { x = 2; }
the result is the BlockStmt { x = 2; }, and for
if constexpr (b) { x = 1; }
there is no result.