code: protected final FilterBeanDescriptor<?, ?> getFilterBeanDescriptorForClassUnbounded(Class<?> filterClass) {
          for (FilterBeanDescriptor<?, ?> descriptor : getFilterBeanDescriptors()) {
              if (filterClass == descriptor.getComponentClass()) {
                  return descriptor;
              }
          }
          return notFoundFilter(filterClass);
      }
docs: Alternative getter method used when sufficient type-information about the
  class is not available.
  
  This method is basically a hack to make the compiler happy, see Ticket
  #417.
  
  @see http://eobjects.org/trac/ticket/417
  
  @param clazz
  @return