19:20:44.706 [main] DEBUG org.opendaylight.yangtools.yang.parser.stmt.reactor.SourceSpecificContext - Source YangStatementStreamSource{identifier=SourceIdentifier [foo]} started phase SOURCE_PRE_LINKAGE
19:20:44.706 [main] DEBUG org.opendaylight.yangtools.yang.parser.stmt.reactor.BuildGlobalContext - Global phase SOURCE_PRE_LINKAGE started