def clearSelection(self):
        self.sheet.clearSelection()
Converts the geometry returned from PostGIS aggregates.
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/packages/spreadsheet/spreadsheet_tab.py/StandardWidgetSheetTab.clearSelection--crossover with--dataset/ETHPy150Open django/django/django/contrib/gis/db/backends/postgis/operations.py/PostGISOperations.convert_geom