public List<TensorType.Dimension> dimensions() {
        return dimensions;
    }
A Vespa tensor type is ordered by the lexicographical ordering of dimension
names. Imported tensors have an explicit ordering of their dimensions.
During import, we need to track the Vespa dimension that matches the
corresponding imported dimension as the ordering can change after
dimension renaming. That is the purpose of this class.

@author lesters
model-integration/src/main/java/ai/vespa/rankingexpression/importer/OrderedTensorType.java