An interface to {TAIL ~ the dataset} is generated that is parameterized by {HEAD ~ an element type parameter} and a key type parameter 
An interface to { TAIL ~ the dataset } is generated that is parameterized by { HEAD ~ an element type parameter } and a key type parameter
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH