Question: why invoke the callback method of properies like this " r.run() ，and are there othe reseaons？

[yuzhongzhu]

DynamicProperty#notifyCallbacks
for (Runnable r : callbacks) {
try {
r.run();
} catch (Exception e) {
logger.error("Error in DynamicProperty callback", e);
}
}

[rgallardo-netflix]

This seems to be more of a general Java question.