add StringUtils.substringBeforeLast(String, int)

[mmariotti]

Hello, This method with int param is missing :)

[codecov-commenter]

Codecov Report

Merging #967 (731f99b) into master (ff733d9) will decrease coverage by 0.02%. The diff coverage is 0.00%.

@@             Coverage Diff              @@
##             master     #967      +/-   ##
============================================
- Coverage     91.99%   91.96%   -0.03%     
- Complexity     7432     7433       +1     
============================================
  Files           189      189              
  Lines         15664    15670       +6     
  Branches       2907     2908       +1     
============================================
+ Hits          14410    14411       +1     
- Misses          677      683       +6     
+ Partials        577      576       -1     

Impacted Files	Coverage Δ
...ain/java/org/apache/commons/lang3/StringUtils.java	98.45% <0.00%> (-0.36%)	:arrow_down:
...apache/commons/lang3/reflect/ConstructorUtils.java	86.00% <0.00%> (+2.00%)	:arrow_up:

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[arturobernalg]

HI @mmariotti Thank you for your PR. Can you add test cases that cover all the possible path?

TY