class_docstr: Names for the transitive subgroups of S2.
code: def get_perm_group(self):
      return SymmetricGroup(2)
  
imports: from collections import defaultdict
  from enum import Enum
  import itertools
  from sympy.combinatorics.named_groups import SymmetricGroup, AlternatingGroup, CyclicGroup, DihedralGroup, set_symmetric_group_properties, set_alternating_group_properties
  from sympy.combinatorics.perm_groups import PermutationGroup
  from sympy.combinatorics.permutations import Permutation
label_desc: Use image node_id 1 for calling the S2TransitiveSubgroups obj's underlying member method code with example usage: obj.get_perm_group() and returns: SymmetricGroup