string guess(string $path) Tries to guess the mime type of the given file. The file is

File move(string $directory, string $name

class MimeTypeGuesser implements

static

string|null getMimeType() Returns the mime type of the file. The mime type is guessed

static bool isSupported() Returns whether this guesser is supported on the current

register(

int|null getClientSize() Returns the file size. It is extracted from the request from

class ExtensionGuesser implements

static