e ModelWriter format: {}, service: {}, nativeType: {}",             new Object[]{mediaType, reference,                 nativeType != null ? nativeType.getClass().getName() : "none"});         Map<MediaType,List<ServiceReference>> typeWriters = writers.get(null);         removeTypeWriter(typeWriters, mediaType, reference);         if(nativeType != null){             typeWriters = writers.get(nativeType.getName());             if(typeWriters != null){                 removeTypeWriter(typeWriters, mediaType, reference);             