# including <tt>after_*</tt> hooks. Note, however, that in that case the client
# including <tt>after_*</tt> hooks. Note, however, that in that case the client
# needs to be aware of it because an ordinary +save+ will raise such exception
# needs to be aware of it because an ordinary +save+ will raise such exception
# instead of quietly returning +false+.
# instead of quietly returning +false+.
#
# == Debugging callbacks
#
# To list the methods and procs registered with a particular callback, append <tt>_callback_chain</tt> to the callback name that you wish to list and send that to your class from the Rails console: