High Creating EffectiveModelContext with DefaultYangParserFactory fails if any models use `yang-data` extension from ietf-restconf.yang. This issue could be related to ietf-restconf namespace "urn:ietf:params:xml:ns:yang:ietf-restconf", because if is changed EffectiveModelContext is successfully built.
[main] WARN org.opendaylight.yangtools.yang.parser.stmt.reactor.BuildGlobalContext - Unexpected error processing source RevisionSourceIdentifier [name=test-bug@2017-07-27]. Please file an issue with this model attached. java.util.NoSuchElementException: No value present at java.base/java.util.Optional.get(Optional.java:148) at org.opendaylight.yangtools.rfc8040.parser.YangDataEffectiveStatementImpl.<init>(YangDataEffectiveStatementImpl.java:40) at org.opendaylight.yangtools.rfc8040.parser.YangDataStatementSupport.createEffective(YangDataStatementSupport.java:123) at org.opendaylight.yangtools.rfc8040.parser.YangDataStatementSupport.createEffective(YangDataStatementSupport.java:36) at org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport.createEffective(AbstractStatementSupport.java:85) at org.opendaylight.yangtools.yang.parser.stmt.reactor.AbstractResumedStatement.createEffective(AbstractResumedStatement.java:124) at org.opendaylight.yangtools.yang.parser.stmt.reactor.AbstractResumedStatement.createEffective(AbstractResumedStatement.java:109) at org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase.createEffective(StatementContextBase.java:439) at org.opendaylight.yangtools.yang.parser.stmt.reactor.ReactorStmtCtx.loadEffective(ReactorStmtCtx.java:389) at org.opendaylight.yangtools.yang.parser.stmt.reactor.ReactorStmtCtx.buildEffective(ReactorStmtCtx.java:385) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) at org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport.buildEffectiveSubstatements(AbstractStatementSupport.java:139) at org.opendaylight.yangtools.yang.parser.rfc7950.stmt.module.ModuleStatementSupport.buildEffectiveSubstatements(ModuleStatementSupport.java:227) at org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport.createEffective(AbstractStatementSupport.java:83) at org.opendaylight.yangtools.yang.parser.stmt.reactor.AbstractResumedStatement.createEffective(AbstractResumedStatement.java:124) at org.opendaylight.yangtools.yang.parser.stmt.reactor.AbstractResumedStatement.createEffective(AbstractResumedStatement.java:109) at org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase.createEffective(StatementContextBase.java:439) at org.opendaylight.yangtools.yang.parser.stmt.reactor.ReactorStmtCtx.loadEffective(ReactorStmtCtx.java:389) at org.opendaylight.yangtools.yang.parser.stmt.reactor.ReactorStmtCtx.buildEffective(ReactorStmtCtx.java:385) at org.opendaylight.yangtools.yang.parser.stmt.reactor.BuildGlobalContext.transformEffective(BuildGlobalContext.java:261) at org.opendaylight.yangtools.yang.parser.stmt.reactor.BuildGlobalContext.buildEffective(BuildGlobalContext.java:211) at org.opendaylight.yangtools.yang.parser.stmt.reactor.CrossSourceStatementReactor$BuildAction.buildEffective(CrossSourceStatementReactor.java:224) at org.opendaylight.yangtools.yang.parser.impl.DefaultYangParser.buildEffectiveModel(DefaultYangParser.java:96)
