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