code: def ground_truth_target_function(x):
      return 10 * x + 1
  
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 1 for calling a global function with example usage: ground_truth_target_function(x) and returns: unknown