def METHOD_NAME(self, surface, hemi, subsampling):
    print(f"surface: {surface}")
    print(f"hemi: {hemi}")
    print(f"subsampling: {subsampling}")
    m2m = file_finder.SubjectFiles(subpath="/path/to/m2m_subid")
    surface_dir = Path(m2m.surface_folder)
    p = m2m.get_surface(hemi, surface, subsampling)
    if subsampling is None:
        assert p == surface_dir / f"{hemi}.{surface}.gii"
    else:
        assert p == surface_dir / str(subsampling) / f"{hemi}.{surface}.gii"