Automattic / jetpack

		/*

		 * Experimental and Beta blocks need the production blocks as well.

		 */

		if (

			'experimental' === $blocks_variation

			|| 'beta' === $blocks_variation

		) {

			$production_extensions = isset( $preset_extensions_manifest->production )

				? (array) $preset_extensions_manifest->production

				: array();

			$preset_extensions = array_unique( array_merge( $preset_extensions, $production_extensions ) );

		}

		/*

		 * Beta blocks need the experimental blocks as well.

		 * - Experimental

		 * - Beta

		 */

		if ( 'beta' === $blocks_variation ) {

			$production_extensions = isset( $preset_extensions_manifest->experimental )

				? (array) $preset_extensions_manifest->experimental

				: array();

			$preset_extensions = array_unique( array_merge( $preset_extensions, $production_extensions ) );

		}

		return $preset_extensions;

	}