ect1">
<a name="id-1.3.34.5.54.10.4.5.4"></a><h2>Description</h2>
<p>
              The implementation of the <code class="computeroutput">impl</code> struct depends on whether the <code class="computeroutput">Data</code>
              parameter is a transform environment that contains a value corresponding to the
              <a class="link" href="../transforms_type.html" title="Struct transforms_type">proto::transforms_type</a> key. If so, that value is treated as a
              map from rules to transf