NXP-12258: better concurrency for creation of complex properties
NXP-12258: fix dirty detection
Cleanup
NXP-12267: Add send beforeModification event for proxy (with metadata)
Merge pull request #7 from nuxeo/fix-NXP-12267-BJ-AddSendEventOnProxyModification

Fix nxp 12267 bj add send event on proxy modification