public File getExistingFile(final String param) {
    return get(param, getFileConverter(),
        new And<>(new FileExists(), new IsFile()),
        "existing file");
  }
public File getExistingFile ( final String param ) { return get ( param , getFileConverter ( ) , new And < > ( new FileExists ( ) , new IsFile ( ) ) , "existing file" ) ; }
Gets a file, which is required to exist.