During evaluating possible fixes for cr6887286 (and cr7104147), we realized that the curent implimentation is not ideal. On principle, we should never use recursion to iterate over a list whose size is unbound (and under the influence of the Java application).

This CR is to track the reimplementation of this code. Our main goal is to remove recursion from this code to reduce the risk of a SOFE. Secondary goals include making the code easier to understand and maintain. A very important requirement of any change is that it is thread safe.