ec) of the static
 method that implements the function. If the name (e.g. "sum") is given, the first declared method in class that
 matches the name is selected. If the signature (e.g. "int sum(int, int)" ) is given, then the declared method with
 the signature is selected.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></c