resultPtr = Tcl_GetByteArrayFromObj(obj, &size);
resultPtr = (void**)Tcl_GetByteArrayFromObj(obj, &size);
const void* dp_array_get_index(dp_array_t a, int index) {    void** resultPtr;    int size;    Tcl_Obj* array = (Tcl_Obj*)a;    Tcl_Obj* obj;    Tcl_ListObjIndex(_util_interp, array, index, &obj);    resultPtr = Tcl_GetByteArrayFromObj(obj, &size);    return *resultPtr;}