code: def apply(self, fgraph):
      pass
  
file_path: pytensor/tests/graph/rewriting/test_db.py
imports: import pytest
  from pytensor.graph.rewriting.basic import GraphRewriter, SequentialGraphRewriter
  from pytensor.graph.rewriting.db import EquilibriumDB, LocalGroupDB, ProxyDB, RewriteDatabase, SequenceDB
label_desc: Use image node_id 1 for calling the TestRewriter obj's underlying member method code with example usage: obj.apply(fgraph) without return types