question: @ Override public boolean contains ( Object value ) { if ( value == null ) { return false ; } final Iterator it = new StepIterator ( this , stepSize ) ; while ( it . hasNext ( ) ) { if ( compareEqual ( value , it . next ( ) ) ) { return true ; } } return false ; }
target:  iterates over all values and returns true if one value matches. Also see containsWithinBounds.