if ((tbpttBackLength != DEFAULT_TBPTT_LENGTH || tbpttFwdLength != DEFAULT_TBPTT_LENGTH) && backpropType != BackpropType.TruncatedBPTT) {
                log.warn("Truncated backpropagation through time lengths have been configured with values " + tbpttFwdLength
                        + " and " + tbpttBackLength + " but backprop type is set to " + backpropType + ". TBPTT configuration" +
                        " settings will only take effect if backprop type is set to BackpropType.TruncatedBPTT");
            }