Change record status: 
Project: 
Introduced in branch: 
8.3.x
Introduced in version: 
8.3.0
Description: 

Before 8.3.x the MemoryBackend constructor took in a $bin argument but didn't do anything with the parameter and the argument wasn't needed. We removed the empty constructor to avoid any confusion or extra code needed to get a bin name to provide to the MemoryBackend.

Impacts: 
Module developers