code: def df_geom_collection():
      from shapely.geometry import (
          Point,
          LineString,
          Polygon,
          GeometryCollection,
      )
  
      df = geopandas.GeoDataFrame(
          {
              "geometry": [
                  GeometryCollection(
                      [
                          Polygon([(0, 0), (1, 1), (0, 1)]),
                          LineString([(0, 0), (1, 1)]),
                          Point(0, 0),
                      ]
                  )
              ]
          },
          crs="epsg:4326",
      )
      return df
  
imports: import os
  import warnings
  import pandas
  import geopandas
  from geopandas import GeoDataFrame, read_file, read_postgis
  import geopandas._compat
  from geopandas.io.sql import _get_conn, _write_postgis
  from geopandas.tests.util import create_postgis, create_spatialite, validate_boro_df
  import pytest
label_desc: Use image node_id 7 for calling a global function with example usage: df_geom_collection() and returns: df