n></dt>
<dd><code>prefix</code> - The namespace for the function or "" for no namesapce.</dd>
<dd><code>function</code> - The name of the function. If empty (""), the method name is used as the function name.</dd>
<dd><code>className</code> - The full Java class name that implements the function.</dd>
<dd><code>method</code> - The name (specified without parenthesis) or the signature (as in the Java Language Spec) of the static
 method that implements the function. If the name (e.g. "sum") is given, the fir