code: def _geo_chart() -> Geo:
      return (
          Geo()
          .add_schema(maptype="china", center=[39, 117.7], zoom=9)
          .add(
              "geo",
              [list(z) for z in zip(Faker.provinces, Faker.values())],
          )
          .set_global_opts(visualmap_opts=opts.VisualMapOpts())
      )
  
imports: from unittest.mock import patch
  from nose.tools import assert_equal, assert_in
  from pyecharts import options
  from pyecharts.charts import Geo
  from pyecharts.faker import Faker
  from pyecharts.globals import ChartType, SymbolType
label_desc: Use image node_id 8 for calling a global function with example usage: _geo_chart() and returns: Geo