Equivalenece classe file

[Ray6283]

From https://salmon.readthedocs.io/en/latest/file_formats.html#quantification-file ,
it says "If salmon was run with the --dumpEq option, then a file called eq_classes.txt will exist in the auxiliary directory"
my question is how do we run with --dumpEq option?
I am following steps described in https://combine-lab.github.io/salmon/getting_started/
and could get the results (the quants file) , but don't know where to put --dumpEq to get the Equivalence class file.
Thanks.

[rob-p]

duplicate of #882 (comment)