"Invalid BioPAX object to wrap as node" warnings

[IgorRodchenkov]

@ozgunbabur , I see lots of warnings in PC logs (cpath2, PC9, which uses Paxtools) like:
WARN o.b.p.q.w.GraphL3Undirected - Invalid BioPAX object to wrap as node. Ignoring: http://identifiers.org/wikipathways/WP143/dd235

• probably comes from this line.

Why is this a warning, is this a problem, bug?.. If not, why to log as warning instead of debug?..

[IgorRodchenkov]

@ozgunbabur
Well, I am going to edit that confusing message (it's not about valid or invalid BioPAX at all) and change its level to 'debug'. Just curious, why Gene objects should be skipped there?