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.
@author Andy Clement
@since 3.0.1
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