def render(self, session):
writer = Writer()
# put out the column headers
writer.write(",".join(self.render_csv_header(session)))
writer.write("\n")
# put out the data
data = self.get_data(session)
for record in data:
writer.write(",".join(self.render_csv_cells(session, record)))
writer.write("\n")
return writer.to_string()
