_unhook_block_registration() – After the init action has been run once, trying to re-register block types can cause _doing_it_wrong warnings. To avoid this, unhook the block registration functions.
_upload_dir_no_subdir() – Helper used with the `upload_dir` filter to remove the /year/month sub directories from the uploads path and URL.
Block_Template_Utils_Test::test_get_block_template_from_post() – Should retrieve the template from the CPT.
