public function get_aliases() {
		$runtime_alias = getenv( 'WP_CLI_RUNTIME_ALIAS' );
		if ( false !== $runtime_alias ) {
			$returned_aliases = array();
			foreach ( json_decode( $runtime_alias, true ) as $key => $value ) {
				if ( preg_match( '#' . self::ALIAS_REGEX . '#', $key ) ) {
					$returned_aliases[ $key ] = array();
					foreach ( self::$alias_spec as $i ) {
						if ( isset( $value[ $i ] ) ) {
							$returned_aliases[ $key ][ $i ] = $value[ $i ];
						}
					}
				}
			}
			return $returned_aliases;
		}

		return $this->aliases;
	}