How to enable CXF Bean Validation Feature in a blueprint bundle

Issue

• We are trying to enable Bean Validation feature on CXF endpoints in a blueprint Fuse bundle, following the instructions of Apache CXF Developer Guide documentation.
  The documentation show us how to configure using Spring bundles, when we try to migrate to a blueprint bundle, the following error happens:

2017-01-27 12:25:07,799 | ERROR | ion(6)-127.0.0.1 | BlueprintContainerImpl           | 23 - org.apache.aries.blueprint.core - 1.4.5 | Unable to start blueprint container for bundle test-fuse/1.0.0.SNAPSHOT
org.osgi.service.blueprint.container.ComponentDefinitionException: Element ref must have a valid component-id attribute
    at org.apache.aries.blueprint.parser.Parser.parseRef(Parser.java:1254)
    at org.apache.aries.blueprint.parser.Parser.parseValueGroup(Parser.java:1220)
    at org.apache.aries.blueprint.parser.Parser.parseCollection(Parser.java:777)
    at org.apache.aries.blueprint.parser.Parser.parseElement(Parser.java:400)