Handle new API in the helper example

[enugentdt]

Fixes #817

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the [Contribution Guide] and my PR follows them
• I updated my branch with the master branch
• I have added tests that prove my fix is effective or that my feature works // does this apply?
• I have added necessary documentation about the functionality in the appropriate .md file
• I have added in line documentation to the code I modified

Short description of what this PR does:

• This updates the Helper example to follow the v6 API

[codecov]

Codecov Report

Merging #818 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #818   +/-   ##
=======================================
  Coverage   80.02%   80.02%           
=======================================
  Files          70       70           
  Lines        2018     2018           
  Branches      339      339           
=======================================
  Hits         1615     1615           
  Misses        204      204           
  Partials      199      199

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[thinkingserious]

Hello @enugentdt,

Thanks again for the PR!

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Team SendGrid DX

[enugentdt]

Absolutely! Glad to help. Thank you so much!