change map to sync map and refactor the FwdCapabilityKey

[ItsFunny]

• Targeted PR against correct branch (see CONTRIBUTING.md)

• Linked to github-issue with discussion and accepted design OR link to spec that describes this work.

• Wrote tests

• Updated relevant documentation (docs/)

• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md

• Reviewed Files changed in the github PR explorer

---

For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
• Reviewers Assigned
• Squashed all commits, uses message "Merge PR #XYZ: [title]" (coding standards)

[codecov-commenter]

Codecov Report

Merging #98 (fa84345) into dev (e6ed0b9) will decrease coverage by 0.01%.
The diff coverage is n/a.

❗ Current head fa84345 differs from pull request most recent head 91db69a. Consider uploading reports for the commit 91db69a to get more accurate results

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@@            Coverage Diff             @@
##              dev      #98      +/-   ##
==========================================
- Coverage   34.45%   34.44%   -0.01%     
==========================================
  Files         430      430              
  Lines       44883    44883              
==========================================
- Hits        15464    15462       -2     
- Misses      28271    28272       +1     
- Partials     1148     1149       +1     

see 1 file with indirect coverage changes