code: def test_external_libraries_detection():
      assert (
          can_use_pandas()
      ), "pandas should be detected in test environment"
      assert (
          can_use_numpy()
      ), "numpy should be detected in test environment"
      assert is_module_available(
          "matplotlib"
      ), "matplotlib should be detected in test environment"
      assert is_module_available(
          "sklearn"
      ), "sklearn should be detected in test environment"
      assert not is_module_available("foobar"), "please don't"
  
imports: import sys
  import time
  from h2o.utils.shared_utils import is_module_available, can_use_pandas, can_use_numpy, LookupSeq
  from tests import pyunit_utils
label_desc: Use image node_id 1 for calling a global function with example usage: test_external_libraries_detection() without return types