code: def test_get_daycount_fn(self):
      for key in DayCountConventions:
          # Call function for all available daycount conventions
          if key != DayCountConventions.DAY_COUNT_CONVENTION_UNKNOWN:
              framework.market_data.utils.get_daycount_fn(key)
  
imports: import tensorflow.compat.v2
  import tf_quant_finance
  from tensorflow.python.framework import test_util
label_desc: Use image node_id 1 for calling the UtilsTest obj's underlying member method code with example usage: obj.test_get_daycount_fn() without return types