code: def bokeh_backend():
      import holoviews as hv
  
      hv.renderer("bokeh")
      prev_backend = hv.Store.current_backend
      hv.Store.current_backend = "bokeh"
      yield
      hv.Store.current_backend = prev_backend
  
file_path: holoviews/holoviews/tests/conftest.py
imports: import contextlib
  import pytest
  from panel.tests.conftest import optional_markers, port, pytest_addoption, pytest_configure, server_cleanup
label_desc: Use image node_id 3 for calling a global function with example usage: bokeh_backend() without return types