Disable checkstyle for stubs
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.7</version>
</plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-checkstyle-plugin</artifactId>
+ <configuration>
+ <skip>true</skip>
+ </configuration>
+ </plugin>
</plugins>
</build>
</project>
