Program: 33232
Project: 33232
Buggy source:
private void handleReferenceDispatching(final ODataRequest request,final ODataResponse response,final int lastPathSegmentIndex) throws ODataApplicationException, ODataLibraryException {
  final HttpMethod method=request.getMethod();
  final boolean isCollection=((UriResourcePartTyped)uriInfo.getUriResourceParts().get(lastPathSegmentIndex - 1)).isCollection();
  if (isCollection && method == HttpMethod.GET) {
    final ContentType responseFormat=ContentNegotiator.doContentNegotiation(uriInfo.getFormatOption(),request,handler.getCustomContentTypeSupport(),RepresentationType.COLLECTION_REFERENCE);
    handler.selectProcessor(ReferenceCollectionProcessor.class).readReferenceCollection(request,response,uriInfo,responseFormat);
  }
 else   if (isCollection && method == HttpMethod.POST) {
    final ContentType requestFormat=ContentType.parse(request.getHeader(HttpHeader.CONTENT_TYPE));
    checkContentTypeSupport(requestFormat,RepresentationType.REFERENCE);
    handler.selectProcessor(ReferenceProcessor.class).createReference(request,response,uriInfo,requestFormat);
  }
 else   if (!isCollection && method == HttpMethod.GET) {
    final ContentType responseFormat=ContentNegotiator.doContentNegotiation(uriInfo.getFormatOption(),request,handler.getCustomContentTypeSupport(),RepresentationType.REFERENCE);
    handler.selectProcessor(ReferenceProcessor.class).readReference(request,response,uriInfo,responseFormat);
  }
 else   if (!isCollection && (method == HttpMethod.PUT || method == HttpMethod.PATCH)) {
    final ContentType requestFormat=ContentType.parse(request.getHeader(HttpHeader.CONTENT_TYPE));
    checkContentTypeSupport(requestFormat,RepresentationType.REFERENCE);
    handler.selectProcessor(ReferenceProcessor.class).updateReference(request,response,uriInfo,requestFormat);
  }
 else   if (method == HttpMethod.DELETE) {
    handler.selectProcessor(ReferenceProcessor.class).deleteReference(request,response,uriInfo);
  }
 else {
    throw new ODataHandlerException("String_Node_Str" + method + "String_Node_Str",ODataHandlerException.MessageKeys.HTTP_METHOD_NOT_ALLOWED,method.toString());
  }
}

Fixed version (ground truth):
private void handleReferenceDispatching(final ODataRequest request,final ODataResponse response,final int lastPathSegmentIndex) throws ODataApplicationException, ODataLibraryException {
  final HttpMethod httpMethod=request.getMethod();
  final boolean isCollection=((UriResourcePartTyped)uriInfo.getUriResourceParts().get(lastPathSegmentIndex - 1)).isCollection();
  if (isCollection && httpMethod == HttpMethod.GET) {
    final ContentType responseFormat=ContentNegotiator.doContentNegotiation(uriInfo.getFormatOption(),request,handler.getCustomContentTypeSupport(),RepresentationType.COLLECTION_REFERENCE);
    handler.selectProcessor(ReferenceCollectionProcessor.class).readReferenceCollection(request,response,uriInfo,responseFormat);
  }
 else   if (isCollection && httpMethod == HttpMethod.POST) {
    final ContentType requestFormat=ContentType.parse(request.getHeader(HttpHeader.CONTENT_TYPE));
    checkContentTypeSupport(requestFormat,RepresentationType.REFERENCE);
    handler.selectProcessor(ReferenceProcessor.class).createReference(request,response,uriInfo,requestFormat);
  }
 else   if (!isCollection && httpMethod == HttpMethod.GET) {
    final ContentType responseFormat=ContentNegotiator.doContentNegotiation(uriInfo.getFormatOption(),request,handler.getCustomContentTypeSupport(),RepresentationType.REFERENCE);
    handler.selectProcessor(ReferenceProcessor.class).readReference(request,response,uriInfo,responseFormat);
  }
 else   if (!isCollection && (httpMethod == HttpMethod.PUT || httpMethod == HttpMethod.PATCH)) {
    final ContentType requestFormat=ContentType.parse(request.getHeader(HttpHeader.CONTENT_TYPE));
    checkContentTypeSupport(requestFormat,RepresentationType.REFERENCE);
    handler.selectProcessor(ReferenceProcessor.class).updateReference(request,response,uriInfo,requestFormat);
  }
 else   if (httpMethod == HttpMethod.DELETE) {
    handler.selectProcessor(ReferenceProcessor.class).deleteReference(request,response,uriInfo);
  }
 else {
    throw new ODataHandlerException(getMethodNotAllowedStringMessage(httpMethod),ODataHandlerException.MessageKeys.HTTP_METHOD_NOT_ALLOWED,httpMethod.toString());
  }
}