String servletClassName = serverPackageName + "." + serviceName + "Impl";
String pattern = "/" + module.getName() + "/" + serviceName;
// servlet
com.google.gdt.eclipse.designer.model.web.ServletElement servletElement =
new com.google.gdt.eclipse.designer.model.web.ServletElement();
moduleElement.addChild(servletElement);
servletElement.setName(serviceName);
servletElement.setClassName(servletClassName);
// servlet-mapping
com.google.gdt.eclipse.designer.model.web.ServletMappingElement servletMappingElement =
new com.google.gdt.eclipse.designer.model.web.ServletMappingElement();