Astra_Theme_Background_Updater::update_db_version( string|null $version = null )

		public static function update_db_version( $version = null ) {

			do_action( 'astra_theme_update_before' );

			// Get auto saved version number.
			/** @psalm-suppress InvalidArgument */ // phpcs:ignore Generic.Commenting.DocComment.MissingShort
			$saved_version = astra_get_option( 'theme-auto-version', false );

			if ( false === $saved_version ) {

				$saved_version = ASTRA_THEME_VERSION;

				// Update auto saved version number.
				astra_update_option( 'theme-auto-version', ASTRA_THEME_VERSION );
			}

			// If equals then return.
			if ( version_compare( $saved_version, ASTRA_THEME_VERSION, '=' ) ) {
				astra_update_option( 'is_theme_queue_running', false );
				return;
			}

			// Not have stored?
			if ( empty( $saved_version ) ) {

				// Get old version.
				$theme_version = get_option( '_astra_auto_version', ASTRA_THEME_VERSION );

				// Remove option.
				delete_option( '_astra_auto_version' );

			} else {

				// Get latest version.
				$theme_version = ASTRA_THEME_VERSION;
			}

			// Update auto saved version number.
			astra_update_option( 'theme-auto-version', $theme_version );

			astra_update_option( 'is_theme_queue_running', false );

			// Update variables.
			Astra_Theme_Options::refresh();

			delete_transient( 'astra-addon-db-migrated' );

			do_action( 'astra_theme_update_after' );
		}