MethodFilter instances allow SpEL users to fine tune the behaviour of the method resolution
process. Method resolution (which translates from a method name in an expression to a real
method to invoke) will normally retrieve candidate methods for invocation via a simple call
to 'Class.getMethods()' and will choose the first one that is suitable for the
input parameters. By registering a MethodFilter the user can receive a callback
and change the methods that will be considered suitable.
Called by the method resolver to allow the SpEL user to organize the list of candidate
methods that may be invoked. The filter can remove methods that should not be
considered candidates and it may sort the results. The resolver will then search
through the methods as returned from the filter when looking for a suitable
candidate to invoke.
methods - the full list of methods the resolver was going to choose from
a possible subset of input methods that may be sorted by order of relevance