Add a public getter for parameter items for ProductStep

[theneelshah]

No description provided.

[Cole-Greer]

VOTE +1

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 75.52%. Comparing base (9b46b67) to head (aaf3414).
⚠️ Report is 410 commits behind head on 3.7-dev.

Files with missing lines	Patch %	Lines
...remlin/process/traversal/step/map/ProductStep.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             3.7-dev    #3300      +/-   ##
=============================================
- Coverage      76.14%   75.52%   -0.63%     
+ Complexity     13152    13149       -3     
=============================================
  Files           1084     1092       +8     
  Lines          65160    67102    +1942     
  Branches        7285     7389     +104     
=============================================
+ Hits           49616    50678    +1062     
- Misses         12839    13806     +967     
+ Partials        2705     2618      -87     

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[xiazcy]

VOTE +1