<groupId>org.eclipse.xtend</groupId>
<artifactId>xtend-maven-plugin</artifactId>
</plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <configuration>
+ <source>1.8</source>
+ <target>1.8</target>
+ </configuration>
+ </plugin>
</plugins>
</build>
</project>