code: def dunder_naming_scheme() -> DunderNamingScheme:  # noqa: D
      return DunderNamingScheme()
  
file_path: metricflow/metricflow/test/naming/test_dunder_naming_scheme.py
imports: from __future__ import annotations
  from typing import Sequence
  import pytest
  from dbt_semantic_interfaces.references import EntityReference
  from dbt_semantic_interfaces.type_enums import TimeGranularity
  from dbt_semantic_interfaces.type_enums.date_part import DatePart
  from metricflow.naming.dunder_scheme import DunderNamingScheme
  from metricflow.specs.specs import DimensionSpec, EntitySpec, LinkableInstanceSpec, TimeDimensionSpec
  from metricflow.test.time.metric_time_dimension import MTD_SPEC_MONTH, MTD_SPEC_WEEK, MTD_SPEC_YEAR
label_desc: Use image node_id 1 for calling a global function with example usage: dunder_naming_scheme() and returns: DunderNamingScheme