code: def test_empty_linestring(self):
      assert LineString().is_empty
      assert LineString(None).is_empty
      assert LineString([]).is_empty
      assert LineString(empty_generator()).is_empty
  
imports: import math
  import numpy
  import pytest
  from shapely import GeometryCollection, LinearRing, LineString, MultiLineString, MultiPoint, MultiPolygon, Point, Polygon
  from shapely.geometry import mapping, shape
  from shapely.geometry.base import BaseGeometry, EmptyGeometry
label_desc: Use image node_id 6 for calling the TestEmptiness obj's underlying member method code with example usage: obj.test_empty_linestring() without return types