QNTM-5426: Adding null checks to harden return from CreateNodeFromShortName #9269
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Please Note:
DynamoRevitrepo will need to be cherry-picked into all the DynamoRevit Release branches that Dynamo supports. Contributors will be responsible for cherry-picking their reviewed commits to the other branches after aLGTMlabel is added to the PR.Purpose
While addressing a crash it was determined that there was a path that a null value could be returned when there was no null check, which could lead to other possible crashes. This PR is intended to guard against possible null returns leading to a crash. Note that it is not intended to make the code fully functional in the event of exceptional circumstances, just to guard against crashing.
This PR currently only addresses the first three levels after the initial CreateNodeFromShortName possible method null return. There is still another level (or more) of null checks needed to definitively handle the null possibilities, but it seemed that the changes were leading to diminishing returns. This work can be continued using the notes in the associated JIRA issue (QNTM-5426).
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