presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/JdbcIdentity.java/JdbcIdentity/equals
class JdbcIdentity:    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        JdbcIdentity that = (JdbcIdentity) o;
        return Objects.equals(user, that.user) &&
                Objects.equals(extraCredentials, that.extraCredentials);
    }