CvSeq* cvTreeToNodeSeq(void* first, int header_size, CvMemStorage* storage) {
    void *fptr;
    CvSeq*retval;

    fptr = dlsym(_Chcv_handle, "cvTreeToNodeSeq_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return NULL;
    }
    dlrunfun(fptr, &retval, cvTreeToNodeSeq, first, header_size, storage);
    return retval;
}
