Why is defaultTableRef null when more than one tables are present?

[W1nstar]

I'm having issues trying to read a catalog with more than one table, using the fill function. For some reason, it needs me to specify the tableRef. I don't know wich one it is, and it wouldn't be good for me to hardcode on my app the name of a table that might change later.

I thought _defaultTableRef would hold a reference to it, but is null. Theres this piece of code nulling it:

JSDO/src/progress.js

Lines 2278 to 2279 in 319202b

	if (this._numBuffers != 1)
	this._defaultTableRef = null;

    if (this._numBuffers != 1)
        this._defaultTableRef = null;

Should defaultTableRef be null if there's more than one table for some "background" reason?