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- dict_resolve_env_vars(data: Dict[Any, Any], keys: bool = True, values: bool = True, lists: bool = True, env: Mapping[str, str] = None) -> Dict[Any, Any]
 - Recursively resolve dictionary data that may contain strings that should be
 
treated as environment-variable substitutions. The data is updated 
in-place.  
 - list_resolve_env_vars(data: List[Any], keys: bool = True, values: bool = True, lists: bool = True, env: Mapping[str, str] = None) -> List[Any]
 - Recursively resolve list data that may contain strings that should be
 
treated as environment-variable substitutions. The data is updated 
in-place.  
 - str_resolve_env_var(data: str, env: Mapping[str, Any] = None) -> str
 - Convert string data to a resolved environment variable if the string begins
 
with '$' and is a key in the environment with a non-empty value.  
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