<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def patterned(self):
 """Selects the pattern fill type. Note that calling this method does not by itself set a foreground or background color of the pattern. Rather it enables subsequent assignments to properties like fore_color to set the pattern and colors. """

        pattFill = self._xPr.get_or_change_to_pattFill()
        self._fill = _PattFill(pattFill)