public double get(long ... indexes) {
        return get(toValueIndex(indexes, dimensionSizes));
    }
Returns the value at the given indexes as a double

@param indexes the indexes into the dimensions of this. Must be one number per dimension of this
@throws IllegalArgumentException if any of the indexes are out of bound or a wrong number of indexes are given
vespajlib/src/main/java/com/yahoo/tensor/IndexedTensor.java