presto-main/src/main/java/io/prestosql/operator/scalar/ArrayFlattenFunction.java/ArrayFlattenFunction/ArrayFlattenFunction
class ArrayFlattenFunction:    private ArrayFlattenFunction()
    {
        super(new FunctionMetadata(
                new Signature(
                        FUNCTION_NAME,
                        ImmutableList.of(typeVariable("E")),
                        ImmutableList.of(),
                        arrayType(new TypeSignature("E")),
                        ImmutableList.of(arrayType(arrayType(new TypeSignature("E")))),
                        false),
                false,
                ImmutableList.of(new FunctionArgumentDefinition(false)),
                false,
                true,
                "Flattens the given array",
                SCALAR));
    }