[Documentation]: Should we add Returns section to the docstrings of our get methods (get_metadata, etc.)

[pauladkisson]

See #1063

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[pauladkisson]

On the one hand, documentation = good, OTH simple 1-liners usually suffice to convey all the relevant info.

[h-mayorquin]

I am leaning toward yes as in most cases implementing them at the base interface should work for most cases so it is not a lot of work. Plus, is a uniform rule, everything should have arguments and returns...