code: public Integer getHeight() {
          final Object result = getStateHelper().eval(PropertyKeys.height);
          if (result == null) {
              return null;
          }
          // this will handle any type so long as its convertable to integer
          return Integer.valueOf(result.toString());
      }
docs: The height of the sheet. Note this is applied to the inner div which is why it is recommend you use this property instead of a style class.
  
  @return