_getDuplicateEmptyDFG -> _similarDFGEmpty

[dehann]

Better standardization with Julia base and verbNounAdjective

[dehann]

added similar to verb definitions wiki.

[GearsAD]

Just thinking, similar may be confusing, Could we maybe call it _emptyDuplicate or something?

[Affie]

The same thing can maybe be done with the copy functions. We can perhaps use it to do the heavy lifting.

_emptyDuplicate(dfg) = deepcopyGraph(typeof(dfg), dfg, [])

The line above can be seen as a combination of copy and empty verbs

[dehann]

+1, as suggested sounds good to me.

[Affie]

xref #1084