code: public static final <X> Function<X,Boolean> lessOrEqToBy(final IFunction<X,?> by, final Object object) {
          return FnFunc.chain(by, lessOrEqTo(object));
      }
docs: <p>
  Determines whether the result of executing the specified function
  on the target object is less or equal to the specified object parameter
  in value, this is, whether <tt>functionResult.compareTo(object) &lt;= 0</tt>. Both
  the target and the specified object have to implement {@link Comparable}.
  </p>
  
  @param object the object to compare to the target
  @return true if function result is less or equal to the specified object, false if not