The function call-next-method can be used
within the body forms (but not the lambda list)
of a method defined by a method-defining form to call the
If there is no next method, the generic function
no-next-method is called.
The type of method combination used determines which methods
can invoke call-next-method. The standard
method combination type allows call-next-method
to be used within primary methods and around methods.
For generic functions using a type of method combination defined by
the short form of define-method-combination,
call-next-method can be used in around methods only.
When call-next-method is called with no arguments, it passes the
current method's original arguments to the next method. Neither
argument defaulting, nor using setq, nor rebinding variables
with the same names as parameters of the method affects the values
call-next-method passes to the method it calls.
When call-next-method is called with arguments, the
next method is called with those arguments.
If call-next-method is called with arguments but omits
optional arguments, the next method called defaults those arguments.
The function call-next-method returns any values that are
returned by the next method.
The function call-next-method has lexical scope and
indefinite extent and can only be used within the body of a
method defined by a method-defining form.
Whether or not call-next-method is fbound in the
global environment is implementation-dependent;
however, the restrictions on redefinition and shadowing of
call-next-method are the same as for symbols in the common-lisp package
which are fbound in the global environment.
The consequences of attempting to use call-next-method outside
of a method-defining form are undefined.