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public class AsyncScalarFunction extends UserDefinedFunction {
    @Override
    public final FunctionKind getKind() {
        return FunctionKind.ASYNC_SCALAR;
    }

    @Override
    public TypeInference getTypeInference(DataTypeFactory typeFactory) {
        TypeInference val = TypeInferenceExtractor.forAsyncScalarFunction(typeFactory, getClass());
        return val;
    }

    @Override
    public Set<FunctionRequirement> getRequirements() {
        return Collections.singleton(FunctionRequirement.ORDERED);
    }
}