[Rd] as(<dgCMatrix>, "dgTMatrix")' is deprecated.

[Koenker, Roger W]

I’ve been getting this warning for a while now (about five years if memory serves) and I’m finally tired of it, but also too tired to track it down in Matrix.  As far as I can grep  I have no reference to either deprecated object, only the apparently innocuous  Matrix::Matrix(A, sparse = TRUE).  Can someone advise, Martin perhaps?  I thought it might come from Rmosek, but mosek folks don’t think so.
https://groups.google.com/g/mosek/c/yEwXmMfHBbg/m/l_mkeM4vAAAJ

All the best to all the best of the R community,
R