code: public static Class loadImplementorClass( String className, Class interfaceType )
      {
          return loadImplementorClass( className, interfaceType, getClassLoader() );
      }
docs: Load an implementor class from the context classloader.
  
  @param className the name of the implementor class.
  @param interfaceType the interface that the given class should implement.
  @return the implementor Class, or <code>null</code> if an error occurred (the error will be logged).