code: public ExecutableValidationType<ValidationConfigurationDescriptor> getOrCreateExecutableValidation()
     {
        Node node = model.getOrCreate("executable-validation");
        ExecutableValidationType<ValidationConfigurationDescriptor> executableValidation = new ExecutableValidationTypeImpl<ValidationConfigurationDescriptor>(this, "executable-validation", model, node);
        return executableValidation;
     }
docs: If not already created, a new <code>executable-validation</code> element with the given value will be created.
  Otherwise, the existing <code>executable-validation</code> element will be returned.
  @return  a new or existing instance of <code>ExecutableValidationType<ValidationConfigurationDescriptor></code>