code: def test_from_json_mixed_keys(self):
      table = Table.from_json("examples/test_mixed.json")
  
      self.assertColumnNames(
          table, ["one", "two", "three", "four", "five"]
      )
      self.assertColumnTypes(
          table, [Number, Number, Text, Text, Number]
      )
      self.assertRows(
          table,
          [
              [1, 4, "a", None, None],
              [2, 3, "b", "d", None],
              [None, 2, "👍", None, 5],
          ],
      )
  
file_path: agate/tests/test_from_json.py
imports: from agate import Table
  from agate.data_types import Boolean, Date, DateTime, Number, Text, TimeDelta
  from agate.rows import Row
  from agate.testcase import AgateTestCase
  from agate.type_tester import TypeTester
label_desc: Use image node_id 5 for calling the TestJSON obj's underlying member method code with example usage: obj.test_from_json_mixed_keys() without return types