/*
 *  call-seq:
 *     lazy_doc.load -> lazy_doc
 *
 *  Load all unloaded fields in the document from the index.
 */
static VALUE
frt_lzd_load(VALUE self)
{
    LazyDoc *lazy_doc = (LazyDoc *)DATA_PTR(rb_ivar_get(self, id_data));
    int i;
    for (i = 0; i < lazy_doc->size; i++) {
        LazyDocField *lazy_df = lazy_doc->fields[i];
        frt_lazy_df_load(self, ID2SYM(rb_intern(lazy_df->name)), lazy_df);
    }
    return self;
}