57     private $scheme = '';  variable in GuzzleHttp\\Psr7\\Uri
138                 $this->scheme,
167 …public static function composeComponents(?string $scheme, ?string $authority, string $path, ?strin…  argument
172         if ($scheme != '') {
173             $uri .= $scheme.':';
176         if ($authority != '' || $scheme === 'file') {
371         return $this->scheme;
418     public function withScheme($scheme): UriInterface  argument
420         $scheme = $this->filterScheme($scheme);
422         if ($this->scheme === $scheme) {
427         $new->scheme = $scheme;
545         $this->scheme = isset($parts['scheme'])
574      * @param mixed $scheme
578     private function filterScheme($scheme): string  argument
580         if (!is_string($scheme)) {
584         return \strtr($scheme, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz');
730         if ($this->host === '' && ($this->scheme === 'http' || $this->scheme === 'https')) {
738             if ($this->scheme === '' && false !== strpos(explode('/', $this->path, 2)[0], ':')) {