code: def test_save_custom_confidence_curve(self):
      with tempfile.TemporaryDirectory() as tmpdir:
          ranges = np.arange(0, 1, 0.01)
          save_custom_confidence_curve(ranges, ranges, tmpdir)
  
file_path: NeMo/tests/collections/asr/confidence/test_asr_confidence_metrics.py
imports: import math
  import tempfile
  import numpy
  import pytest
  from scipy.stats import uniform
  from nemo.collections.asr.parts.utils.confidence_metrics import auc_nt, auc_pr, auc_roc, auc_yc, ece, nce, save_confidence_hist, save_custom_confidence_curve, save_nt_curve, save_pr_curve, save_roc_curve
label_desc: Use image node_id 3 for calling the TestSaveConfidencePlot obj's underlying member method code with example usage: obj.test_save_custom_confidence_curve() without return types