How to intercept unknown (subclass) methods?

How to intercept unknown (subclass) methods?

References

Reference NO 1

http://stackoverflow.com/questions/15198058/how-to-intercept-unknown-subclass-methods

Reference NO 2

http://stackoverflow.com/questions/15071971/c-how-to-point-to-a-method-in-a-subclass

Reference NO 3

http://rosettacode.org/wiki/Respond_to_an_unknown_method_call

Reference NO 4

http://redpointtech.blogspot.com/2010/03/grails-intercepting-service-class_30.html

Reference NO 5

http://developer.apple.com/library/ios/documentation/cocoa/reference/foundation/Classes/NSObject_Class/Reference/Reference.html

Reference NO 6

http://www.infoq.com/resource/news/2009/01/The-Well-Grounded-Rubyist/en/resources/ch15black.pdf

Reference NO 7

http://www.cs.cmu.edu/~aldrich/papers/selective-open-recursion.pdf

Reference NO 8

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