docs: public void retractObject(final InternalFactHandle handle,
                                final PropagationContext context,
                                final ObjectTypeConf objectTypeConf,
                                final InternalWorkingMemory workingMemory) {
          if ( log.isTraceEnabled() ) {
              log.trace( "Delete {}", handle.toString()  );
          }
  
          workingMemory.addPropagation(new PropagationEntry.Delete(this, handle, context, objectTypeConf));
      }