src/app/dbtext/storage/GroupData.php
public function add(string $key, array $args = []) {
		$this->data[self::TEXTS_KEY][$key] = array();
		$this->data[self::PLACEHOLDER_JSON_KEY][$key] = $args;

		foreach ($this->listeners as $listener) {
			$listener->keyAdded($key, $this);
		}
	}
public function add(string $key, array $args = []) {
		$this->data[self::TEXTS_KEY][$key] = array();
		$this->data[self::PLACEHOLDER_JSON_KEY][$key] = $args;

		foreach ($this->listeners as $listener) {
			$listener->keyAdded($key, $this);
		}
	}
Method adds key to {@see GroupData::$data} and triggers {@see GroupDataListener::keyAdded() listeners}.

@param string $key