Behavior Limitations

[nilmerg]

This should be a collection of limitations the current implementation of behaviors have. Each entry still needs to be thought through and evaluated.

• Retrieve and Property behaviors are closely related, though only the latter is applied to custom columns. Though, maybe this is more a case of RewriteColumn behaviors not being able to transform custom columns they are responsible for. See icinga-notification-web's IdTagAggregator for example.