Reconsider throwing from property getters #1308
Description
In some cases, e.g. #1306, property getters throw exceptions in places where it may be surprising to users. We should reconsider where and when we do this.
I think it's reasonable to throw an exception for errors that are outwith API contracts, but within reasonable use, property getters should return null instead of throwing on error. If the error information is important, those properties should be functions instead.