checks if every element in a collection are unique by object #equals object . concode_field_sep PlaceHolder placeHolder concode_field_sep boolean isAnyNull
boolean function ( Collection < ? > arg0 ) { final Set < Object > loc0 = new HashSet < > ( ) ; for ( Object loc1 : arg0 ) { final boolean loc2 = ! loc0 . add ( loc1 ) ; if ( loc2 ) { return false ; } } return true ; }