Compile failed: Value for identity is invalid

[hrk091]

I've tried to compile OpenConfig model and to install sample config to openconfig emulator(based on confd) via DynamicDeviceConfigSynchronizer. The config sample is

{
  "openconfig-interfaces:interfaces": {
    "interface": [
      {
        "name": "foo",
        "config": {
          "enabled": "true",
          "type": "ianaift:fastEther"
        }
      }
    ]
  }
}

And the sample code is below

        DefaultInterfaces interfaces = new DefaultInterfaces();

        DefaultYangAutoPrefixInterface _interface = new DefaultYangAutoPrefixInterface();
        interfaces.addToYangAutoPrefixInterface(_interface);
        String ifName = "foo";
        _interface.name(ifName);

        DefaultConfig config = new DefaultConfig();
        _interface.config(config);
        config.enabled(true);
        try {
            Class<? extends InterfaceType> fastEther = IanaInterfaceType.fromString("fastEther");
            config.type(fastEther);
        } catch (Exception e) {
            printlog("Instance creation failed: ", e);
        }

        printlog("Object to be created: {}", interfaces);
        ModelObjectData modelData = DefaultModelObjectData.builder()
                .addModelObject(interfaces)
                .identifier(null)
                .build();
        ResourceData rnode = modelConverter.createDataNode(modelData);

In this case, I have to use IdentityRef to describe InterfaceType from iana-if-type, and some error related to IdentityRef occurred.

Object to be created: DefaultInterfaces{yangAutoPrefixInterface=[DefaultYangAutoPrefixInterface{name=hoge, valueLeafFlags={1}, config=DefaultConfig{name=null, type=class org.onosproject.yang.gen.v1.ianaiftype.rev20170330.ianaiftype.FastEther, mtu=0, description=null, enabled=true, valueLeafFlags={2, 5}}, state=null, holdTime=null, subinterfaces=null}]}
org.onosproject.yang.runtime.impl.ModelConverterException: Value for identity is invalid
        at org.onosproject.yang.runtime.impl.ModelConverterUtil.getIdentityRefValue(ModelConverterUtil.java:372)
        at org.onosproject.yang.runtime.impl.ModelConverterUtil.getObjFromType(ModelConverterUtil.java:309)
        at org.onosproject.yang.runtime.impl.ModelConverterUtil.getLeafObject(ModelConverterUtil.java:573)
        at org.onosproject.yang.runtime.impl.DataTreeBuilderHelper.processLeaves(DataTreeBuilderHelper.java:769)
        at org.onosproject.yang.runtime.impl.DataTreeBuilderHelper.processCurSchemaNode(DataTreeBuilderHelper.java:469)
        at org.onosproject.yang.runtime.impl.DataTreeBuilderHelper.getDataTree(DataTreeBuilderHelper.java:173)
        at org.onosproject.yang.runtime.impl.DefaultDataTreeBuilder.processNodeObj(DefaultDataTreeBuilder.java:549)
        at org.onosproject.yang.runtime.impl.DefaultDataTreeBuilder.processDataNodeConversion(DefaultDataTreeBuilder.java:189)
        at org.onosproject.yang.runtime.impl.DefaultDataTreeBuilder.getResourceData(DefaultDataTreeBuilder.java:155)
        at org.onosproject.yang.runtime.impl.DefaultModelConverter.createDataNode(DefaultModelConverter.java:48)
        at org.onosproject.yang.impl.YangRuntimeManager.createDataNode(YangRuntimeManager.java:162)
        at org.onosproject.d.config.sync.test.TestDyConCommand.executeBody(TestDyConCommand.java:168)
        at org.onosproject.d.config.sync.test.TestDyConCommand.execute(TestDyConCommand.java:66)
        at org.onosproject.cli.AbstractShellCommand.doExecute(AbstractShellCommand.java:150)
        at org.apache.karaf.shell.console.AbstractAction.execute(AbstractAction.java:33)
        at org.apache.karaf.shell.commands.basic.AbstractCommand.execute(AbstractCommand.java:33)
        at Proxy08afd643_5b58_433b_8412_2373eb79976b.execute(Unknown Source)
        at Proxy08afd643_5b58_433b_8412_2373eb79976b.execute(Unknown Source)
        at org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:78)
        at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:480)
        at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:406)
        at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)
        at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:182)
        at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:119)
        at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:94)
        at org.apache.karaf.shell.console.impl.jline.ConsoleImpl.run(ConsoleImpl.java:210)
        at org.apache.karaf.shell.ssh.ShellFactoryImpl$ShellImpl$1.runConsole(ShellFactoryImpl.java:158)
        at org.apache.karaf.shell.ssh.ShellFactoryImpl$ShellImpl$1$1.run(ShellFactoryImpl.java:133)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.apache.karaf.jaas.modules.JaasHelper.doAs(JaasHelper.java:57)
        at org.apache.karaf.shell.ssh.ShellFactoryImpl$ShellImpl$1.run(ShellFactoryImpl.java:129)
Error executing command: Value for identity is invalid

This error has occurred when I use both ver2.3.0 and latest.