code: def _op_sources_for_dep(dep):
      return [
          source
          for source in dep.resdef.sources
          if is_operation_source(source)
      ]
  
imports: import os
  import re
  import logging
  import typing
  from guild import cli
  from guild import resolver
  from guild import resourcedef
  from guild import util
label_desc: Use image node_id 43 for calling a global function with example usage: _op_sources_for_dep(dep) and returns: unknown