code: def test_first_default_is_overridable(self):
      rows = records.RecordCollection(iter([]))
      assert rows.first("Cheese") == "Cheese"
  
imports: from collections import namedtuple
  import records
  from pytest import raises
label_desc: Use image node_id 9 for calling the TestRecordCollection obj's underlying member method code with example usage: obj.test_first_default_is_overridable() without return types