WP_Locale_Switcher::restore_previous_locale(): string|false

123	public function restore_previous_locale() {124		$previous_locale = array_pop( $this->stack );125 126		if ( null === $previous_locale ) {127			// The stack is empty, bail.128			return false;129		}130 131		$entry  = end( $this->stack );132		$locale = is_array( $entry ) ? $entry[0] : false;133 134		if ( ! $locale ) {135			// There's nothing left in the stack: go back to the original locale.136			$locale = $this->original_locale;137		}138 139		$this->change_locale( $locale );140 141		/**142		 * Fires when the locale is restored to the previous one.143		 *144		 * @since 4.7.0145		 *146		 * @param string $locale          The new locale.147		 * @param string $previous_locale The previous locale.148		 */149		do_action( 'restore_previous_locale', $locale, $previous_locale[0] );150 151		return $locale;152	}