fn walkSwitchCase(w: *Walk, switch_case: Ast.full.SwitchCase) Error!void
fn walkSwitchCase(w: *Walk, switch_case: Ast.full.SwitchCase) Error!void { for (switch_case.ast.values) |value_expr| { try walkExpression(w, value_expr); } try walkExpression(w, switch_case.ast.target_expr); }