code: def _resolve_env_flag_refs(flag_vals, env):
      for env_name, env_val in env.items():
          env[env_name] = util.resolve_refs(env_val, flag_vals)
  
imports: import logging
  import pprint
  from guild import flag_util
  from guild import util
  from guild import yaml_util
label_desc: Use image node_id 21 for calling a global function with example usage: _resolve_env_flag_refs(flag_vals, env) without return types