How can I check some classes or packages only with animal-sniffer-maven-plugin? -

with following configuration, how can make sure check against signature limited classes , packages?

<plugin>   <groupid>org.codehaus.mojo</groupid>   <artifactid>animal-sniffer-maven-plugin</artifactid>   <executions>     <execution>       <goals>         <goal>check</goal>       </goals>       <configuration>         <signature>         </signature>         <!-- how can select packages/classes check? -->       </configuration>     </execution>   </executions> </plugin> 

you can extract packages in separate sub-modules, , use plugin in modules.