docs: def lockFile(self, fileName, byteOffset, length, dokanFileInfo):
          """Lock a file.
  
          :param fileName: name of file to lock
          :type fileName: ctypes.c_wchar_p
          :param byteOffset: location to start lock
          :type byteOffset: ctypes.c_longlong
          :param length: number of bytes to lock
          :type length: ctypes.c_longlong
          :param dokanFileInfo: used by Dokan
          :type dokanFileInfo: PDOKAN_FILE_INFO
          :return: error code
          :rtype: ctypes.c_int
  
          """
          return self.operations('lockFile', fileName, byteOffset, length)