WP_Block_Supports::register_attributes()

Source

private function register_attributes() {
	$block_registry         = WP_Block_Type_Registry::get_instance();
	$registered_block_types = $block_registry->get_all_registered();
	foreach ( $registered_block_types as $block_type ) {
		if ( ! ( $block_type instanceof WP_Block_Type ) ) {
			continue;
		}
		if ( ! $block_type->attributes ) {
			$block_type->attributes = array();
		}

		foreach ( $this->block_supports as $block_support_config ) {
			if ( ! isset( $block_support_config['register_attribute'] ) ) {
				continue;
			}

			call_user_func(
				$block_support_config['register_attribute'],
				$block_type
			);
		}
	}
}

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