ass="spec value" id="val-yojson_of_t"><a href="#val-yojson_of_t" class="anchor"></a><code><span class="keyword">val</span> yojson_of_t : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> Ppx_yojson_conv_lib.Yojson.Safe.t</code></dt></dl></div></div></div><dl><dt class="spec value" id="val-empty"><a href="#val-empty" class="anchor"></a><code><span class="keyword">val</span> empty : <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-filter"><a href="#val-filter" class="anchor">