Replace anonymous type with lambda

[arturobernalg]

[codecov-commenter]

Codecov Report

Merging #312 (d2f87ee) into master (87647d0) will increase coverage by 0.05%. The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master     #312      +/-   ##
============================================
+ Coverage     86.02%   86.07%   +0.05%     
- Complexity     4664     4674      +10     
============================================
  Files           286      286              
  Lines         13508    13507       -1     
  Branches       1984     1983       -1     
============================================
+ Hits          11620    11626       +6     
+ Misses         1325     1321       -4     
+ Partials        563      560       -3     

Impacted Files	Coverage Δ
...ons/collections4/bloomfilter/BitCountProducer.java	100.00% <100.00%> (ø)
...ommons/collections4/bloomfilter/IndexProducer.java	100.00% <100.00%> (ø)
...commons/collections4/bloomfilter/SimpleHasher.java	100.00% <100.00%> (ø)
...commons/collections4/map/AbstractReferenceMap.java	91.48% <0.00%> (+2.59%)	:arrow_up:

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