code: def xfail_on_fvp(request, use_fvp):
      """mark the tests as xfail if running on fvp."""
      if request.node.get_closest_marker("xfail_on_fvp"):
          if use_fvp:
              request.node.add_marker(
                  pytest.mark.xfail(
                      reason="checking corstone300 reliability on CI"
                  )
              )
  
imports: import pytest
label_desc: Use image node_id 3 for calling a global function with example usage: xfail_on_fvp(request, use_fvp) without return types