protected boolean validTensorType(TensorType target) {
        return target.dimensions().size() == 2 && target.indexedSubtype().rank() == 1;
    }
Evaluate the embedding model if the result is not present in the context cache.

@param context the context accompanying the request
@param text the text that is embedded
@return the model output
model-integration/src/main/java/ai/vespa/embedding/ColBertEmbedder.java