pocketmine\block\RedstoneWire::updateNormalWire PHP Method

    public function updateNormalWire(Block $block, $strength, $type, array $hasUpdated)
    {
        /** @var RedstoneWire $block */
        if ($block->getId() == Block::REDSTONE_WIRE) {
            if ($block->getStrength() < $strength) {
                return $block->calcSignal($strength, $type, $hasUpdated);
            }
        }
        return $hasUpdated;
    }