CollectionReader and Annotators not having access to the same ExternalResource instance

Creating a pipeline as follows:
a. CollectionReader
b. AnnotatorA
c. AnnotatorB

All the above (including the CollectionReader and the 2 annotators) have a
dependency on an ExternalResource.

Here's a shortened code that I used:
// create the external resource desc
ExternalResourceDescription myExternalResourceDesc =
createExternalResourceDescription();

// create the CollectionReaderDescription, with the external resource desc
CollectionReaderDescription myCollectionReaderDesc =
createDescription(myExternalResourceDesc);

// create the MyAnnotatorA desc, with the external resource desc
AnalysisEngineDescription myAnnotatorADesc =
createPrimitiveDescription(myExternalResourceDesc);

// create the MyAnnotatorB desc, with the external resource desc
AnalysisEngineDescription myAnnotatorBDesc =
createPrimitiveDescription(myExternalResourceDesc);

// run
SimplePipeline.runPipeline(myCollectionReaderDesc, myAnnotatorADesc,
myAnnotatorBDesc);

In the initialize(UimaContext context) method of collection reader and
annotator, I print out the instance of the ExternalResource:
MyCollectionReader:com.example.MyExternalResource <at> 26a7dd39
MyAnnotatorA:com.example.MyExternalResource <at> 6ee1dac2
MyAnnotatorB:com.example.MyExternalResource <at> 6ee1dac2

As you can see, MyAnnotatorA and MyAnnotatorB got the same instance of the
ExternalResource, but MyCollectionReader got a different instance.

They should be accessing the same ExternalResource instance.