code: def random_multipolygon(size):
      polygons = []
      for i in range(size):
          polygons.append(random_polygon(i))
      result = MultiPolygon(polygons)
      return result
  
imports: import geopandas
  import numpy
  import pandas
  import pytest
  from geopandas.testing import assert_geodataframe_equal
  from shapely.affinity import rotate
  from shapely.geometry import LineString, MultiLineString, MultiPoint, MultiPolygon, Point, Polygon
  import cudf
  import cuspatial
label_desc: Use image node_id 2 for calling a global function with example usage: random_multipolygon(size) and returns: result