Adapted from compute.affinities in the gcrma package.
Attempts to find the tab-separated probe sequence file associated with
a particular CDF, and matches sequence to probe index in order to assign
an affinity to each probe.
"computeAffinities"(this, safe=TRUE, force=FALSE, verbose=FALSE, ...)logical argument passed to getProbeSequenceData().FALSE, cached results is returned, if available.Verbose.