code: def validate_tree(tree, expected_count, min_child_samples):
      assert tree is not None
      assert len(tree) > 0
      assert ERROR in tree[0]
      assert ID in tree[0]
      assert PARENTID in tree[0]
      assert tree[0][PARENTID] is None
      assert SIZE in tree[0]
      assert tree[0][SIZE] == expected_count
      for node in tree:
          assert node[SIZE] >= min_child_samples
  
file_path: responsible-ai-toolbox/responsibleai/tests/error_analysis_validator.py
imports: import pytest
  from erroranalysis._internal.matrix_filter import CATEGORY1, CATEGORY2, COUNT, FALSE_COUNT, MATRIX, VALUES
  from raiutils.exceptions import UserConfigValidationException
  from responsibleai._internal.constants import ErrorAnalysisManagerKeys
  from responsibleai.exceptions import DuplicateManagerConfigException
label_desc: Use image node_id 4 for calling a global function with example usage: validate_tree(tree, expected_count, min_child_samples) without return types