question: private void addExposedTypes ( TypeVariable type , Class < ? > cause ) { if ( done ( type ) ) { return ; } visit ( type ) ; for ( Type bound : type . getBounds ( ) ) { logger . debug ( "Adding exposed types from {}, which is a type bound on {}" , bound , type ) ; addExposedTypes ( bound , cause ) ; } }
target:  Adds any types exposed to this set. These will come from the (possibly absent) bounds on the type variable.