getChild method in a module doesn't seem to refer to a child(?) - magento

Question

I am using the Meanbee Infinite Scroll module in my project. I have it working for normal category product listings. But now I'm attempting to have it activate on my custom made module.
However I am stumped over line 68 in Script.php:
66 return (
67 $block !== false &&
68 $block->getChild('toolbar') !== false && // <-- This line
69 $this->_getPagerBlock() !== false &&
70 $this->_getPagerBlock()->getCollection()
71 );
There is no xml element that has attribute name of toolbar. Even in the normal category xml that is working. So what is "toolbar" refering to?
A var_dump($block->getChild('toolbar')); returns false on my page but not on the normal category product listing page.
My XML is as follows (for clarity):
<block type="mynamespace/mymodule" name="mymodule.view" template="mynamespace/mymodule/view.phtml">
<block type="catalog/product_list" name="product_list" template="toxicfox/giftfinder/list.phtml">
<block type="catalog/product_list_toolbar" name="product_list_toolbar" template="catalog/product/list/toolbar.phtml">
<block type="page/html_pager" name="product_list_toolbar_pager"/>
</block>
<action method="addColumnCountLayoutDepend"><layout>empty</layout><count>6</count></action>
<action method="addColumnCountLayoutDepend"><layout>one_column</layout><count>5</count></action>
<action method="addColumnCountLayoutDepend"><layout>two_columns_left</layout><count>4</count></action>
<action method="addColumnCountLayoutDepend"><layout>two_columns_right</layout><count>4</count></action>
<action method="addColumnCountLayoutDepend"><layout>three_columns</layout><count>3</count></action>
<action method="setToolbarBlockName"><name>product_list_toolbar</name></action>
</block>
</block>
And the core XML (which works with the Infinite Scroll module) is:
<block type="catalog/category_view" name="category.products" template="catalog/category/view.phtml">
<block type="catalog/product_list" name="product_list" template="catalog/product/list.phtml">
<block type="catalog/product_list_toolbar" name="product_list_toolbar" template="catalog/product/list/toolbar.phtml">
<block type="page/html_pager" name="product_list_toolbar_pager"/>
</block>
<action method="addColumnCountLayoutDepend"><layout>empty</layout><count>6</count></action>
<action method="addColumnCountLayoutDepend"><layout>one_column</layout><count>5</count></action>
<action method="addColumnCountLayoutDepend"><layout>two_columns_left</layout><count>4</count></action>
<action method="addColumnCountLayoutDepend"><layout>two_columns_right</layout><count>4</count></action>
<action method="addColumnCountLayoutDepend"><layout>three_columns</layout><count>3</count></action>
<action method="setToolbarBlockName"><name>product_list_toolbar</name></action>
</block>
</block>
As you can see, neither block of XML has any element with an attribute name of "toolbar". The only difference is line 1.
Any help is appreciated.

Answer 1

In the Mage_Catalog_Block_Product_List::_beforeToHtml() method, the toolbar block is retrieved from the layout with the name that was indicated by the setToolbarBlockName action, then set as a child block of the products list with the toolbar alias.
In your case, the problem may be that the $block hasn't been output yet with toHtml(), so that it doesn't know yet about its toolbar child, or something of this kind (hard to say because the extension is commercial).