Do not require BindingObject, as we stream navigation encounters
ChoiceIn interface, which is not a BindingObject -- it defers to its
constituent children to provide the BindingObject contract through their
DataObject inheritence.
JIRA: MDSAL-815
Change-Id: I76d1c2405138da2f6985216aef2dfa4580cea724 Signed-off-by: Robert Varga <robert.varga@pantheon.tech>