Gets or sets a file mask for the files which are allowed to be uploaded.
public function getFileMask() {
}
public function setFileMask($value) {
}
Type: string
The file mask for the files allowed to be uploaded. You can use the standard wildcards such as asterisk * (arbitrary substring)
and question mark ? (arbitrary character). To specify several masks, separate them by semicolons, e.g. *.jpg;*.jpeg;*.jpe. To display all possible
files, use *.*.
Default value is "*.*".