code: def issue_manager(self, lab):
      return DataValuationIssueManager(datalab=lab)
  
file_path: cleanlab/tests/datalab/issue_manager/test_data_valuation.py
imports: import numpy
  import pandas
  import pytest
  from cleanlab.datalab.internal.issue_manager.outlier import OutlierIssueManager
  from cleanlab.datalab.internal.issue_manager.data_valuation import DataValuationIssueManager
label_desc: Use image node_id 1 for calling the TestDataValuationIssueManager obj's underlying member method code with example usage: obj.issue_manager(lab) and returns: DataValuationIssueManager