question: @ Override public boolean contains ( Object value ) { final Iterator < Comparable > iter = new StepIterator ( this , 1 ) ; if ( value == null ) { return false ; } while ( iter . hasNext ( ) ) { if ( DefaultTypeTransformation . compareEqual ( value , iter . next ( ) ) ) return true ; } return false ; }
target:  Iterates over all values and returns true if one value matches.