Implementing the left over review comments from pull #18

[buchi-busireddy]

This is fixing left over review comments from #18

[codecov]

Codecov Report

Merging #25 (c4bb231) into main (cd6c5a9) will increase coverage by 0.39%.
The diff coverage is 77.27%.

@@             Coverage Diff              @@
##               main      #25      +/-   ##
============================================
+ Coverage     69.44%   69.84%   +0.39%     
  Complexity      160      160              
============================================
  Files            11       11              
  Lines           707      703       -4     
  Branches         73       73              
============================================
  Hits            491      491              
+ Misses          174      170       -4     
  Partials         42       42              

Flag	Coverage Δ	Complexity Δ
integration	57.46% <77.27%> (+0.32%)	0.00 <3.00> (ø)
unit	31.15% <0.00%> (+0.17%)	0.00 <3.00> (ø)

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Impacted Files	Coverage Δ	Complexity Δ
...race/core/documentstore/mongo/MongoCollection.java	71.20% <77.27%> (+1.46%)	41.00 <3.00> (ø)

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