new error type, event type, event source

[shalehaha]

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov]

Codecov Report

Merging #455 (0412e7e) into dev (c1b3112) will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev     #455      +/-   ##
==========================================
+ Coverage   87.28%   87.33%   +0.05%     
==========================================
  Files          92       92              
  Lines        4081     4081              
==========================================
+ Hits         3562     3564       +2     
+ Misses        519      517       -2