code: def test_available():
      with temp_style("_test_", DUMMY_SETTINGS):
          assert "_test_" in style.available
  
imports: from contextlib import contextmanager
  from pathlib import Path
  from tempfile import TemporaryDirectory
  import sys
  import numpy
  import pytest
  import matplotlib
  from matplotlib import pyplot, style
  from matplotlib.style.core import USER_LIBRARY_PATHS, STYLE_EXTENSION
label_desc: Use image node_id 3 for calling a global function with example usage: test_available() without return types