presto-main/src/main/java/io/prestosql/metadata/IndexHandle.java/IndexHandle/equals
class IndexHandle:    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if (obj == null || getClass() != obj.getClass()) {
            return false;
        }
        final IndexHandle other = (IndexHandle) obj;
        return Objects.equals(this.catalogName, other.catalogName) &&
                Objects.equals(this.transactionHandle, other.transactionHandle) &&
                Objects.equals(this.connectorHandle, other.connectorHandle);
    }