Extend classes generated by cxf-codegen-plugin usign the fluent plugin

pom.xml

            <plugin>
                <groupId>org.apache.cxf</groupId>
                <artifactId>cxf-codegen-plugin</artifactId>
                <version>${cxf.version}</version>
                <executions>
                    <execution>
                        <id>generate-wsdl-sources</id>
                        <phase>generate-sources</phase>
                        <configuration>
                            <wsdlOptions>
                                <wsdlOption>
                                    <wsdl>${basedir}/src/main/resources/wsdl/wsdl.xml</wsdl>
                                    <wsdlLocation>classpath:wsdl/wsdl.xml</wsdlLocation>
                                    <extraargs>
                                        <extraarg>-impl</extraarg>
                                        <extraarg>-verbose</extraarg>
                                        <extraarg>-xjc-Xfluent-api</extraarg>
                                    </extraargs>
                                </wsdlOption>
                            </wsdlOptions>
                        </configuration>
                        <goals>
                            <goal>wsdl2java</goal>
                        </goals>
                    </execution>
                </executions>
                <dependencies>
                    <dependency>
                        <groupId>net.java.dev.jaxb2-commons</groupId>
                        <artifactId>jaxb-fluent-api</artifactId>
                        <version>${jaxb.fluent.api.version}</version>
                    </dependency>
                </dependencies>
            </plugin>