Fix reading java array type

[KasiaKoz]

Fixes #220
The java array types were being read to a set with extra unnecessary characters.

E.g. given:

<attribute name="attrib" class="java.lang.Array">{'A', 'B'}</attribute>

would be read to

{"{'A'", " 'B'}"}

This is now fixed to give:

{"A", "B"}

Added a test to catch the problem:

[mfitz]

The bug fix looks good, but I've queried the conversion from list to set - are we okay with losing duplicate elements? Can this cause a problem?

Also - is there an issue for this bug?

[KasiaKoz]

The bug fix looks good, but I've queried the conversion from list to set - are we okay with losing duplicate elements? Can this cause a problem?

right now we're ok and that's the expected behaviour, we have an issue: #125 so it's known and if this becomes a problem we can start a debate there on what should happen

Also - is there an issue for this bug?

No, I only noticed it when I looked at another bug, that was documented: #156

[KasiaKoz]

Made an issue for the bug and updated the PR description

[mfitz]

Cool.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (127fcf0) 92.08% compared to head (d0891cf) 92.08%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #216   +/-   ##
=======================================
  Coverage   92.08%   92.08%           
=======================================
  Files          37       37           
  Lines        6620     6620           
  Branches     1588     1588           
=======================================
  Hits         6096     6096           
  Misses        305      305           
  Partials      219      219           

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