Cannot generate sources for action with grouping inside grouping

[ERROR] yang-to-sources: Unable to generate sources with org.opendaylight.mdsal.binding.maven.api.gen.plugin.CodeGeneratorImpl generator
 java.lang.NullPointerException
     at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.addImplementedInterfaceFromUses (AbstractTypeGenerator.java:2031)
     at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.addDefaultInterfaceDefinition (AbstractTypeGenerator.java:1700)
     at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.addDefaultInterfaceDefinition (AbstractTypeGenerator.java:1658)
     at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.processDataSchemaNode (AbstractTypeGenerator.java:275)
     at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.actionContainer (AbstractTypeGenerator.java:465)
     at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.actionsToGenType (AbstractTypeGenerator.java:424)
     at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.groupingsToGenTypes (AbstractTypeGenerator.java:691)
     at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.moduleToGenTypes (AbstractTypeGenerator.java:225)
     at org.opendaylight.mdsal.binding.generator.impl.AbstractTypeGenerator.<init> (AbstractTypeGenerator.java:194)
     at org.opendaylight.mdsal.binding.generator.impl.CodegenTypeGenerator.<init> (CodegenTypeGenerator.java:32)
     at org.opendaylight.mdsal.binding.generator.impl.BindingGeneratorImpl.generateTypes (BindingGeneratorImpl.java:70)
     at org.opendaylight.mdsal.binding.maven.api.gen.plugin.CodeGeneratorImpl.generateSources (CodeGeneratorImpl.java:70)
     at org.opendaylight.yangtools.yang2sources.plugin.YangToSourcesProcessor.generateSourcesWithOneGenerator (YangToSourcesProcessor.java:380)
     at org.opendaylight.yangtools.yang2sources.plugin.YangToSourcesProcessor.generateSources (YangToSourcesProcessor.java:330)
     at org.opendaylight.yangtools.yang2sources.plugin.YangToSourcesProcessor.conditionalExecute (YangToSourcesProcessor.java:157)
     at org.opendaylight.yangtools.yang2sources.plugin.YangToSourcesMojo.execute (YangToSourcesMojo.java:124)
     at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
     at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
     at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
     at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
     at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
     at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
     at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
     at java.lang.reflect.Method.invoke (Method.java:498)
     at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
     at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
     at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
     at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
 [ERROR] yang-to-sources: One or more code generators failed, including failed list(generatorClass=exception) {org.opendaylight.mdsal.binding.maven.api.gen.plugin.CodeGeneratorImpl=java.lang.NullPointerException}