I've recently run into several issues where I wanted to initialize a
service after all the dependencies have been injected. Since it's not
always possible to do so utilizing constructor arguments, a callback
after all properties have been set would be beneficial. This can also
be used to validate the proper setup of services.

In Spring this is supported by either implementing an InitializeBean
interface or specifying an init-method attribute in the service
configuration. Since this adds virtually no overhead, I cannot think
of any reasons not to add this. I'd also volunteer on implementing
this if no-one else is/wants to work on it.

Johannes

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