def get_url_bits(self, data_class=None):
url_bits = GroupedVerticalBarChart.get_url_bits(self, data_class)
url_bits.append('chbh=a')
return url_bits
def get_url_bits(self, data_class=None):
url_bits = GroupedVerticalBarChart.get_url_bits(self, data_class)
url_bits.append('chbh=a')
return url_bits
