Plugin for defining alternate object trees based on object attributes.
If you specifiy a custom tree builder class in your tree config, such as
\AppBundle\Util\Backend\DynamicTree\VirtualProductTreeBuilderthen it is possible to combine multiple object (types) per child node, by overriding
the buildCustomTree method, just as in DefaultTreeBuilder.php.
If you want to use the Custom Tree Builder, please add the field "customTreeBuilderClass" as varchar(255) in the bundle's database table (compare installer). Also make sure to clear the data cache.