'Locate a callable to invoke when executing the named command.
@return: a function with the name C{"amp_" + name} on the same
instance, or None if no such function exists.
This function will then be called with the L{AmpBox} itself as an
argument.
@param name: the normalized name (from the wire) of the command.
@type name: C{bytes}'

def locateResponder(self, name):

    fName = nativeString((self.baseDispatchPrefix + name.upper()))
    return getattr(self, fName, None)
