code: def test_minimal_html_filehandle(self):
      w = IntText(4)
      output = StringIO()
      state = dependency_state(w, drop_defaults=True)
      embed_minimal_html(
          output, views=w, drop_defaults=True, state=state
      )
      content = output.getvalue()
      assert content.splitlines()[0] == "<!DOCTYPE html>"
  
file_path: catboost/contrib/python/ipywidgets/py2/ipywidgets/tests/test_embed.py
imports: import json
  import os
  import re
  import tempfile
  import shutil
  import traitlets
  from ipywidgets.widgets import IntSlider, IntText, Text, Widget, jslink, HBox, widget_serialization
  from ipywidgets.embed import embed_data, embed_snippet, embed_minimal_html, dependency_state
label_desc: Use image node_id 9 for calling the TestEmbed obj's underlying member method code with example usage: obj.test_minimal_html_filehandle() without return types