New example of get_object

[grigoriev-semyon]

Description of Change

I've added a description of how to use the get_object method when using AsyncExitStack.

Fixes: #1061

Checklist for All Submissions

• I have added change info to CHANGES.rst (i dont think this is required when update exmaples)
• If this is resolving an issue (needed so future developers can determine if change is still necessary and under what conditions) (can be provided via link to issue with these details):
  • Detailed description of issue
  • Alternative methods considered (if any)
  • How issue is being resolved
  • How issue can be reproduced
• If this is providing a new feature (can be provided via link to issue with these details):
  • Detailed description of new feature
  • Why needed
  • Alternatives methods considered (if any)

[grigoriev-semyon]

thx to @SirGrigory for help in finding a solution to the problem

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ab08687) 86.46% compared to head (861a6d0) 86.46%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1062   +/-   ##
=======================================
  Coverage   86.46%   86.46%           
=======================================
  Files          60       60           
  Lines        5814     5814           
=======================================
  Hits         5027     5027           
  Misses        787      787           

Flag	Coverage Δ
unittests	86.46% <ø> (ø)

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[thehesiod]

ty!