Re: si:allow-redefinitions

[Mabry Tyson <TYSON@WARBUCKS.AI.SRI.COM>]

If you do a Control-Shift-M (expand macro) on the DEFMETHOD that you were
asking about, you will see the line

  (FDEFINE '(FLAVOR:METHOD :FILTER NVT-ASCII-TYPEIN-FILTER)

This indicates that what is defined is	
	(FLAVOR:METHOD :FILTER NVT-ASCII-TYPEIN-FILTER)

so you should do
(si:allow-redefinition '(FLAVOR:METHOD :FILTER NVT-ASCII-TYPEIN-FILTER))

(Yes, the type of the definition is 'DEFUN.)