Data noun to be replaced by save! and load, i.e. replace addData with save!.
As an example, we can have saveBlob[Variable]!, saveBlob[Graph]!, saveBlob[Model]!, saveBlob[Agent]!
Then also convenience functions such as saveDFG!, saveFeatures! etc.

See definitions for load and save:

• https://github.com/JuliaRobotics/DistributedFactorGraphs.jl/wiki/Standard-Definitions-of-API-via-verbNoun-structure

xref discussion