Interface to be implemented by any object that wishes to be notified
of the ServletContext (typically determined by the WebApplicationContext)
that it runs in.
Can be implemented instead of ApplicationContextAware (casting the
context to WebApplicationContext) if all an object needs is a reference
to the ServletContext.
Can be implemented instead of ApplicationContextAware (casting the context to WebApplicationContext) if all an object needs is a reference to the ServletContext.