<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 """ A progess bar dialog. Optionally a `title`, `ticks` and `label` can be provided. :: from fontParts.ui import ProgressBar bar = ProgressBar() # do something bar.close() """

    return dispatcher["ProgressBar"](title=title, ticks=ticks, label=label)