Builder to create a 'BlockTag' loot condition.
The condition passes only if the block obtained from the LootContext is contained from within the given tag.
A 'BlockTag' loot condition requires a block tag to be built.
It might be required for you to import the package if you encounter any issues (like casting an Array), so better be safe than sorry and add the import at the very top of the file.
BlockTag implements the following interfaces. That means all methods defined in these interfaces are also available in BlockTag