hasSpecialBodies

                pub fn hasSpecialBodies(id: Id) bool {
                    return switch (id) {
                        .unnamed_test,
                        .@"test",
                        .decltest,
                        .@"comptime",
                        => false, // these constructs are untyped
                        .const_simple,
                        .const_typed,
                        .pub_const_simple,
                        .pub_const_typed,
                        .extern_const_simple,
                        .pub_extern_const_simple,
                        .var_simple,
                        .pub_var_simple,
                        => false, // these reprs omit special bodies
                        else => true,
                    };
                }