code: public List<INDArray> feedForward(boolean train) {
          try {
              return ffToLayerActivationsDetached(train, FwdPassType.STANDARD, false, layers.length-1,
                      input, mask, null, true);
          } catch (OutOfMemoryError e) {
              CrashReportingUtil.writeMemoryCrashDump(this, e);
              throw e;
          }
      }
docs: Compute activations from input to output of the output layer.
  As per {@link #feedForward(INDArray, boolean)} but using the inputs that have previously been set using {@link #setInput(INDArray)}
  
  @return the list of activations for each layer