Revert "Fix for internalGetAttachments"

This reverts commit 3031da547e60722c4061e2564e2f43b551ff7516.
Revert "ExtendedProperty incorrect for loop check"

This reverts commit 8aee4f2e263244fd1b88f5c24e2eaab780d74bef.
Revert "MapiTypeConverterMapEntry validateValueAsArray is completely wrong"

This reverts commit 24adcb4bfc6e6c151f2cc1466d203ae94acb0c92.