code: def duplicate(self):
      dup_schema_manager = SchemaManager()
      dup_schema_manager.schema = copy.deepcopy(self._schema)
      dup_schema_manager._name_offset_mapping = copy.deepcopy(
          self._name_offset_mapping
      )
      dup_schema_manager._type_mapping = copy.deepcopy(
          self._type_mapping
      )
      dup_schema_manager._offset_name_mapping = copy.deepcopy(
          self._offset_name_mapping
      )
  
      return dup_schema_manager
  
imports: import copy
  from typing import List, Union
  import pandas
  from .utils import AnonymousGenerator
label_desc: Use image node_id 10 for calling the SchemaManager obj's underlying member method code with example usage: obj.duplicate() and returns: dup_schema_manager