public DynamicCustomOpsBuilder addInputs(INDArray... inputs) {
            // if we have positive value as numInputs - we should ensure equal amount of arguments
            if (numInputs >= 0) {
                if (inputs == null)
                    throw new ND4JIllegalStateException("CustomOp [" + opName + "] expects at least " + numInputs + " arguments. Null was passed instead.");