def METHOD_NAME(self, rowCount, colCount):
    uuid = self.ctx.sessionUuid
    def createWell(row, column):
        well = WellI()
        well.row = rint(row)
        well.column = rint(column)
        ws = WellSampleI()
        image = self.new_image(name=uuid)
        ws.image = image
        well.addWellSample(ws)
        return well
    plate = PlateI()
    plate.name = rstring("TestPopulateMetadata%s" % uuid)
    for row in range(rowCount):
        for col in range(colCount):
            well = createWell(row, col)
            plate.addWell(well)
    return self.client.sf.getUpdateService().saveAndReturnObject(plate)