code: @Override
      public ApplicationDescriptor securityRole(String roleName, String description) {
          Node security = model.createChild("security-role");
          if (roleName != null) {
              security.createChild("role-name").text(roleName);
          }
          if (description != null) {
              security.createChild("description").text(description);
          }
          return this;
      }
docs: /*
  (non-Javadoc)
  
  @see org.jboss.shrinkwrap.descriptor.api.spec.ee.application.ApplicationDescriptor#securityRole(java.lang.String,
  java.lang.String)