Javadoc
Determines whether the given top-level property name is the first componnet
of any container paths for the given model version. This supports a simple
but not entirely general method of determining whether a property appearing
in the primary source model should be copied as-is into the normalized model.
Assumption is that if it's a contianer prefix, then it should not be. This
works for v2 models, but not quite for v3 models, where vendor extensions of
the /components value need to be handled specially. A more general solution
would require walking the tree to some extent to find nodes that are not
within any containers, and copying them as-is as they are encountered.