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class Module
# Removes the named method, if it exists.
def remove_possible_method(method)
if method_defined?(method) || private_method_defined?(method)
undef_method(method)
end
end
# Replaces the existing method definition, if there is one, with the passed
# block as its body.
def redefine_method(method, &block)
remove_possible_method(method)
define_method(method, &block)
end
end
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