Converting elements in AbelianGroup to gap element

[sagetrac-jlefebvre]

Some trouble in converting elements in AbelianGroup to gap elements
For example we can do this;

sage: G = SymmetricGroup(5)
sage: g = G.list()[2]
sage: H = gap(G)
sage: g in H
True

But not this;

sage: G = AbelianGroup([2,2])
sage: g = G.list()[2]
sage: H = gap(G)
sage: g in H
[...]
TypeError: Gap produced error output
Variable: 'f0' must have a value

Similarly we can't go back the other way around.
That is we can do this;

sage: G = SymmetricGroup(5)
sage: H = gap(G)
sage: r = H.ConjugacyClasses()[2].Representative()
sage: type(r)
<class 'sage.interfaces.gap.GapElement'>
sage: r in G
True
sage: G(r)
(1,2)

But not this

sage: G = AbelianGroup([2,2])
sage: H = gap(G)
sage: r = H.ConjugacyClasses()[2].Representative()
sage: r
f1
sage: r in G
False
sage: G(r)
[...]
TypeError: Argument x (= f1) is of wrong type.

Component: group theory

Keywords: AbelianGroup

Issue created by migration from https://trac.sagemath.org/ticket/6292