code: def test_base_margin(self) -> None:
      run_base_margin_info(np.asarray, xgb.DMatrix, "cpu")
  
imports: import csv
  import os
  import tempfile
  import warnings
  import numpy
  import pytest
  import scipy.sparse
  from hypothesis import given, settings, strategies
  from scipy.sparse import csr_matrix, rand
  import xgboost
  from xgboost import testing
  from xgboost.core import DataSplitMode
  from xgboost.testing.data import np_dtypes, run_base_margin_info
label_desc: Use image node_id 17 for calling the TestDMatrix obj's underlying member method code with example usage: obj.test_base_margin() without return types