field.</p></dd></dl><dl><dt class="spec value" id="val-is_field_declared_as_nonnull"><a href="#val-is_field_declared_as_nonnull" class="anchor"></a><code><span class="keyword">val</span> is_field_declared_as_nonnull : <span><a href="../AnnotatedField/index.html#type-t">AnnotatedField.t</a> option</span> <span>&#45;&gt;</span> bool</code></dt><dt class="spec value" id="val-lookup_field_in_typestate"><a href="#val-lookup_field_in_typestate" class="anchor"></a><code><span class="keyword">val</span> lookup_fiel