code: def test_debc007_len_with_full_tree():
      c = nested_tree()[0]
      assert (
          len(c) == 5 + 5 + 1
      ), "the length of the nested children should match the total of 5 \
      components, 2 strings + 2 numbers + none in c2, and 1 string in c1"
  
imports: import json
  import plotly
  import pytest
  from dash import __version__, Dash
  from dash import html
  from dash.development.base_component import Component
  from dash import dcc, Input, Output
label_desc: Use image node_id 8 for calling a global function with example usage: test_debc007_len_with_full_tree() without return types