code: @Nonnull
    @ReturnsMutableCopy
    public ICommonsList <IValidationExecutorSet> findAll (@Nonnull final Predicate <? super IValidationExecutorSet> aFilter)
    {
      return m_aRWLock.readLocked ( () -> m_aMap.copyOfValues (aFilter));
    }
docs: Final all validation executor sets that match the provided filter.
  
  @param aFilter
  The filter to be used. May be <code>null</code> in which case the
  result is the same as {@link #getAll()}.
  @return Never <code>null</code> but maybe empty.