code: def test_get_full_graph_struct(self):
      full_struct = self.union._get_full_graph_struct()
      self.assertFalse(
          set(full_struct.nodes())
          - set(
              [
                  "yrsmill",
                  "unionsen",
                  "age",
                  "laboract",
                  "deferenc",
                  ".yrsmill",
                  ".unionsen",
                  ".age",
                  ".laboract",
                  ".deferenc",
                  "..ageyrsmill",
                  "..yrsmillage",
              ]
          )
      )
      self.assertFalse(
          set(full_struct.edges())
          - set(
              [
                  ("yrsmill", "unionsen"),
                  ("age", "laboract"),
                  ("age", "deferenc"),
                  ("deferenc", "laboract"),
                  ("deferenc", "unionsen"),
                  ("laboract", "unionsen"),
                  (".yrsmill", "yrsmill"),
                  (".unionsen", "unionsen"),
                  (".age", "age"),
                  (".laboract", "laboract"),
                  (".deferenc", "deferenc"),
                  ("..ageyrsmill", ".age"),
                  ("..ageyrsmill", ".yrsmill"),
                  ("..yrsmillage", ".age"),
                  ("..yrsmillage", ".yrsmill"),
              ]
          )
      )
  
imports: import os
  import unittest
  import networkx
  import numpy
  import numpy.testing
  from pgmpy.models import SEM, SEMAlg, SEMGraph
label_desc: Use image node_id 5 for calling the TestSEMGraph obj's underlying member method code with example usage: obj.test_get_full_graph_struct() without return types