presto-client/src/main/java/io/prestosql/client/ClientSession.java/ClientSession/toString
class ClientSession:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("server", server)
                .add("user", user)
                .add("clientTags", clientTags)
                .add("clientInfo", clientInfo)
                .add("catalog", catalog)
                .add("schema", schema)
                .add("path", path)
                .add("traceToken", traceToken.orElse(null))
                .add("timeZone", timeZone)
                .add("locale", locale)
                .add("properties", properties)
                .add("transactionId", transactionId)
                .omitNullValues()
                .toString();
    }