AbstractMappedMetaData or List?

[jeff.zhang]

the metadata of the element in xsd
minOccurs="0"
maxOccurs="unbounded"

I notice that some use AbstractMappedMetaData (Like ApplicationExceptionsMetaData) and some List (like InitMethodsMetaData). What is the different?

[aloubyansky]

Have a look at AbstractMappedMetaData. It's also a map.