Check if function is extension

Question

Given a KFunction how can I check if it's a extension function?

The only way I know is to check if function.extensionReceiverParameter returns null. Is there any other or a recommended way?

Answer 1

Currently, the only way to check this is to use: function.extensionReceiverParameter.

If it returns null it's not an extension function. If it returns a non-null value that function is a extension function