public Integer getStep() {
    if (StringUtils.isEmpty(getInputElement().getStep())) {
      return null;
    }
    try {
      return Integer.valueOf(getInputElement().getStep());
    } catch (final NumberFormatException e) {
      return null;
    }
  }
public Integer getStep ( ) { if ( StringUtils . isEmpty ( getInputElement ( ) . getStep ( ) ) ) { return null ; } try { return Integer . valueOf ( getInputElement ( ) . getStep ( ) ) ; } catch ( final NumberFormatException e ) { return null ; } }
get distance value should be increased/decreased when using up/down buttons.

@return maximum value allowed