Getter and setter methods for caches in RapData and RapResults object.
cache(x, name, y)# S4 method for RapData,character,ANY
cache(x, name, y)
# S4 method for RapData,character,missing
cache(x, name, y)
# S4 method for RapResults,character,ANY
cache(x, name, y)
# S4 method for RapResults,character,missing
cache(x, name, y)
ANY or NULL depends on y argument.
RapData or RapResults object
character hash.
if ANY this object gets cached with name, else if
missing the object hashed at name gets returned.