code: public function match(
          ModelInterface $model = null,
          PropertyValueBag $input = null,
          PropertyInterface $property = null,
          LegendInterface $legend = null
      ) {
          $propertyName = $this->getTablePropertyName();
          if ($input && $input->hasPropertyValue($propertyName)) {
              $value = $input->getPropertyValue($propertyName);
          } elseif ($model) {
              $value = $model->getProperty($propertyName);
          } else {
              return false;
          }
  
          return $this->desiredValue == (substr($value, 0, 3) === 'mm_');
      }
docs: {@inheritdoc}