bw_heatmap "labels" argument

[YuyingCh]

How is this labels argument presented in the resulting Granges object? From what I understand, the rows are the loci in the provided bed file and columns are the calculated values of given regions being binned and stretched if stretchmode is chosen.
In my practice, I don't seem to find the labels in the returned Granges. For example, if I have 2 bw files for the input, can I assume that the first half of the columns belongs to the first file and the second to the second?

[YuyingCh]

Hi, we talked about it this afternoon. But I found that I can only access the items of the 'inner' list through their indexes, but not through the bw filenames, if that makes sense. I wonder where I can find their names which probably should be passed to them by the labelsargument?