if (TensorUtils.isOne(content.data)) {
if (fromContent.size() != 0)
return null;
dataBijection = new int[0];
currentData = new Tensor[0];
buffer = new IndexMappingBufferImpl();
} else {
if (fromContent.size() != 1)
return null;
dataBijection = new int[1];
currentData = new Tensor[]{content.data};