Smile\ElasticsuiteCore\Index\Mapping::addProperty PHP Method

    private function addProperty(array $properties, $propertyName, $propertyType, $analyzers = [])
    {
        $property = ['type' => FieldInterface::FIELD_TYPE_MULTI];
        foreach ($analyzers as $analyzer) {
            $subFieldName = $analyzer == FieldInterface::ANALYZER_STANDARD ? $propertyName : $analyzer;
            $property['fields'][$subFieldName] = ['type' => $propertyType, 'analyzer' => $analyzer];
        }
        $properties[$propertyName] = $property;
        return $properties;
    }