If Mutation signatures are known (such as COSMIC signatures), we can
estimate the contribution of each signature in different samples.
This functions used a matrix of mutation counts and a matrix of mutation
signatures, and estimates Exposures to Mutational Signature of each sample.
# NOT RUN { x <- mutSignatures:::getTestRunArgs("resolveMutSignatures")
y <- mutSignatures::resolveMutSignatures(mutCountData = x$muts, signFreqData = x$sigs)
y
# }