This is general way to use maven-cdk-plugin. Here is a snippet of CDK project pom.xml :

<project>
..........
 <build>
   <plugins>
      <plugin>
        <groupId>org.richfaces.cdk</groupId>
        <artifactId>maven-cdk-plugin</artifactId>
        <version>4.0.0-SNAPSHOT</version>
         <executions>
           <execution>
            <id>generate</id>
            <phase>generate-sources</phase>
            <goals>
              <goal>generate</goal>
            </goals>
            <configuration>
                .............
            </configuration>
          </execution>
        </executions>
      </plugin>
   </plugins>
 </build>
..........
</project>

To owerwrite default values this plugin can be confugured by the <configure> section:

<configuration>
     <!-- the directory for generated java source files -->
     <outputJavaDirectory>target/cdk-generated/main/java</outputJavaDirectory>
      <!-- the directory for generated non-java files ( faces-config.xml, ...taglib.xml and so on )-->
     <outputResourcesDirectory>target/cdk-generated/main/resources</outputResourcesDirectory>
      <!-- the directory for generated jUnit test source files -->
     <outputTestDirectory>target/cdk-generated/test/java</outputTestDirectory>
      <!-- the directory for generated jUnit test resource files -->
     <outputTestResourcesDirectory>target/cdk-generated/test/java</outputTestResourcesDirectory>
      <!-- define java source files that will be excluded from annotations processing
           by default, CDK processes all Java files -->
     <sourceExcludes>
        <exclude>**/Foo.java</exclude>
     </sourceExcludes>
     <sourceIncludes>
        <include>**/*.java</include>
     </sourceIncludes>
     <!-- faces-config files, with CDK extensions -->
     <facesConfigs>
        <facesConfig>
           <directory>src/main/configs</directory>
           <includes>
              <include>**/*.xml</include>
           </includes>
           <!-- empty by default
           <excludes>
              <exclude>foo/bar.xml</exclude>
           </excludes>
           -->
        </facesConfig>
     </facesConfigs>
     <!-- renderer template  files -->
     <templates>
        <template>
           <directory>src/main/templates</directory>
           <includes>
              <include>**/*.xml</include>
           </includes>
           <!-- empty by default
           <excludes>
              <exclude>foo/bar.xml</exclude>
           </excludes>
           -->
        </template>
     </templates>
     <!-- miscellaneous options -->
     <options>
          <taglibUrl>http://foo.bar/</taglibUrl>
     </options>
     <!-- advanced configuration. most of the CDK modules can be redefined to change default functionality -->
     <workers>
       <!-- element name defines worker interface with implementation class name as content -->
       <org.richfaces.cdk.NamingConventions>org.richfaces.cdk.RichfacesConventions</org.richfaces.cdk.NamingConventions>
     </workers>
</configuration>