presto-main/src/main/java/io/prestosql/operator/scalar/RowNotEqualOperator.java/RowNotEqualOperator/RowNotEqualOperator
class RowNotEqualOperator:    private RowNotEqualOperator()
    {
        super(NOT_EQUAL,
                ImmutableList.of(comparableWithVariadicBound("T", "row")),
                ImmutableList.of(),
                BOOLEAN.getTypeSignature(),
                ImmutableList.of(new TypeSignature("T"), new TypeSignature("T")),
                true);
    }