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

register(

static int getMaxFilesize() Returns the maximum size of an uploaded file as configured

string|null guessClientExtension() Returns the extension based on the client mime type. If

string|null getClientMimeType() Returns the file mime type. The client mime type is extracted

class FileBinaryMimeTypeGuesser implements

class FileinfoMimeTypeGuesser implements

string|null guessExtension() Returns the extension based on the mime type. If the mime

static reset() Resets the singleton instance.

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