| If there exists on the plugin class a method with name matching the
constructor's methodName value then locate the appropriate Method on
the plugin class and return an object encapsulating that info.
If there is no matching method then just return null.
The returned object (when non-null) will invoke the target method
on the plugin class whenever its addRules method is invoked. The
target method is expected to have the following prototype:
public static void xxxxx(Digester d, String patternPrefix);
| 