code: def issue_manager(self, regression_lab):
      return RegressionLabelIssueManager(datalab=regression_lab)
  
imports: import numpy
  import pandas
  import pytest
  from cleanlab import Datalab
  from cleanlab.datalab.internal.issue_manager.regression.label import RegressionLabelIssueManager
label_desc: Use image node_id 4 for calling the TestRegressionLabelIssueManager obj's underlying member method code with example usage: obj.issue_manager(regression_lab) and returns: RegressionLabelIssueManager