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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_symbol_wildcard_label(state: '_State', symbol: Symbol) -> Type[Symbol]: """Return the transition target for the given symbol type from the the given state or None if it does not exist."""

    return next((t for t in state.keys() if is_symbol_wildcard(t) and isinstance(symbol, t)), None)