attr _signatures_cache: HashMap[MMType, MMSignature] = new HashMap[MMType, MMSignature]
# Return the adapted signature of self for a receiver of type t
meth signature_for(t: MMType): MMSignature do
attr _signatures_cache: HashMap[MMType, MMSignature] = new HashMap[MMType, MMSignature]
# Return the adapted signature of self for a receiver of type t
meth signature_for(t: MMType): MMSignature do