def METHOD_NAME(self) -> None:
    node_source = {'marker': ['square', 'circle', 'x']}
    kw = bpg.get_graph_kwargs(node_source, {}, node_marker='marker')
    node_glyph = kw['node_renderer'].glyph
    assert isinstance(node_glyph, Scatter)
    assert node_glyph.marker == field('marker')