def METHOD_NAME(self, line):
    """set
    Set an option in the CS (or create it if it does not exists)
    Usage: set <str> to set a string option (will be stored as a string in CS)
           set <str>,<str>,... to set a list option (will be stored as a list in CS)
    """
    if self.connected:
        line = line.split(" ", 2)
        if len(line) != 2:
            print("Usage: set <key> <value>")
        else:
            self.modificator.setOptionValue(self.root + "/" + line[0], line[1])
            self.dirty = True