Allowing child nodes with 2.0 API

[GarrettAlbright]

I'm trying to "port" a client's custom syntax/blocks to the new API and I'm stuck on a block which basically serves as a wrapper around images and looks something like this:

:::image-block-1
![Warship Gbraakon, Halo Infinite Campaign.](/assets/guides/241/HaloInfinite_Warship_Gbraakon.jpg)
:::

(Most cases are more complex than that but that's an easy case I'm trying to get working first.)

I've got everything seemingly working, except that in the generated HTML, only the wrapper is outputted. While debugging inside the renderer, I see that $this->getChildren() results in just an empty array - the node isn't getting its children added. However, I have this in the block's parser class:

<?php
final class GGDivParser extends AbstractBlockContinueParser implements BlockContinueParserInterface
{
    // …
    public function isContainer(): bool
    {
        return true;
    }

    public function canContain(AbstractBlock $childBlock): bool
    {
        return true;
    }
}

I basically based my code off of the BlockQuote and related classes and I was hoping it'd work the same way, but it's not.

Before I bash my head against a wall too much more, can anyone spot any reason why the node isn't getting any children under it?

[GarrettAlbright]

I managed to figure it out. I had a canHaveLazyContinuationLines method returning true; I misunderstood what that does. (I think it's only for blocks which have to start with a certain character like how blockquotes use >.) After commenting that method out, my code is working as expected.