presto-main/src/main/java/io/prestosql/operator/scalar/JsonStringToRowCast.java/JsonStringToRowCast/JsonStringToRowCast
class JsonStringToRowCast:    private JsonStringToRowCast()
    {
        super(new FunctionMetadata(
                new Signature(
                        JSON_STRING_TO_ROW_NAME,
                        ImmutableList.of(withVariadicBound("T", "row")),
                        ImmutableList.of(),
                        new TypeSignature("T"),
                        ImmutableList.of(VARCHAR.getTypeSignature()),
                        false),
                true,
                ImmutableList.of(new FunctionArgumentDefinition(false)),
                true,
                true,
                "",
                SCALAR));
    }