presto-spi/src/main/java/io/prestosql/spi/connector/NotPartitionedPartitionHandle.java/NotPartitionedPartitionHandle/equals
class NotPartitionedPartitionHandle:    @SuppressWarnings({"EqualsWhichDoesntCheckParameterClass", "ObjectEquality"})
    @Override
    public boolean equals(Object obj)
    {
        return obj == NOT_PARTITIONED;
    }