_callClosestMatchingHandler(event, keyName, keyEventType) {
    const componentListIterator = this.componentList.iterator;

    while (componentListIterator.next()) {
      const matchFound = this.actionResolver.callClosestMatchingHandler(
        event, keyName, keyEventType,
        componentListIterator.position,
        0
      );

      if (matchFound) {
        this.logger.debug(this.logger.keyEventPrefix(), `Searching no further, as handler has been found (and called).`);

        return;
      }
    }
  }
If there is at least one handler for the specified key event type (keydown,
keypress, keyup), then attempt to find a handler that matches the current
key combination