question: @ Override public int hashCode ( ) { int hash = 0 ; if ( altFormat != null ) { hash += altFormat . hashCode ( ) ; } if ( projection != null ) { hash = hash * 37 ; hash += projection . hashCode ( ) ; } if ( version != null ) { hash = hash * 37 ; hash += version . hashCode ( ) ; } return hash ; }
target:  The hashCode for a context is just the hashcode of its parts.