def METHOD_NAME(self, bokeh_model_page: BokehModelPage) -> None:
    text_input = TextInput(placeholder="placeholder")
    page = bokeh_model_page(text_input)
    el = find_element_for(page.driver, text_input, "label")
    assert el.text == ""
    el = find_element_for(page.driver, text_input, "input")
    assert el.get_attribute('placeholder') == "placeholder"
    assert el.get_attribute('type') == "text"
    assert page.has_no_console_errors()