code: def test_from_json_nested(self):
      table = Table.from_json("examples/test_nested.json")
  
      self.assertColumnNames(
          table,
          [
              "one",
              "two/two_a",
              "two/two_b",
              "three/0",
              "three/1",
              "three/2",
          ],
      )
      self.assertColumnTypes(
          table, [Number, Text, Text, Text, Number, Text]
      )
      self.assertRows(
          table,
          [[1, "a", "b", "a", 2, "c"], [2, "c", "d", "d", 2, "f"]],
      )
  
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 6 for calling the TestJSON obj's underlying member method code with example usage: obj.test_from_json_nested() without return types