code: def test_append_records(self):
      arr1 = np.zeros((2,), dtype=("i4,f4,S10"))
      arr1[:] = [(1, 2.0, "Hello"), (2, 3.0, "World")]
  
      arr2 = np.zeros((3,), dtype=("i4,f4,S10"))
      arr2[:] = [(3, 4.0, "foo"), (5, 6.0, "bar"), (7.0, 8.0, "baz")]
  
      df1 = DataFrame(arr1)
      df2 = DataFrame(arr2)
  
      result = df1._append(df2, ignore_index=True)
      expected = DataFrame(np.concatenate((arr1, arr2)))
      tm.assert_frame_equal(result, expected)
  
imports: import datetime
  from itertools import combinations
  import dateutil
  import numpy
  import pytest
  import pandas
  from pandas import DataFrame, Index, Series, Timestamp, concat, isna
  import pandas._testing
label_desc: Use image node_id 6 for calling the TestAppend obj's underlying member method code with example usage: obj.test_append_records() without return types