Added impl param

[dovgopoly]

• Since this PR suggests a bug fix, the tests have been added and the coverage is 100%.
• Since this PR introduces a new feature, the update has been discussed in an Issue or with the team.
• This PR is just a minor change, like a typo fix.

---

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (abb78ee) 100.00% compared to head (a07c3e3) 100.00%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master       #70   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           38        38           
  Lines         1482      1487    +5     
  Branches       193       196    +3     
=========================================
+ Hits          1482      1487    +5     

Files	Coverage Δ
...s-registry/pools/AbstractPoolContractsRegistry.sol	100.00% <100.00%> (ø)
contracts/tokens/SBT.sol	100.00% <100.00%> (ø)

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[Arvolear]

LGTM!