refs https://github.com/TryGhost/Team/issues/861
- The test case illustrates that it's already possible to achieve what's described in the referenced issue (bug where the content is not filtered correctly when a single email segment card is present)
- The bug fix for a general issue should be using this parser's ability to properly filter html/plaintext content
refs 474e6c4c45
- The method was not easy to understand after skimming through it.
- As we are working on developing a similar pattern for upcoming similar featured created a basic test suited to see input/output relation clearly