MIDL2361
The documentation lists this name without a value.
Documented in Win32
procedures with a [vararg] attribute must have a SAFEARRAY(VARIANT) parameter; param order is [vararg], [lcid], [retval] Most of the parameters for procedures with the [ vararg ] attribute must occur before the SAFEARRAY(VARIANT) parameter. The SAFEARRAY(VARIANT) parameter must be present. If the parameter list contains a parameter with the [ lcid ] attribute, it must follow the SAFEARRAY(VARIANT) parameter. If the parameter list contains a parameter with the [ retval ] attribute, it must occur after the parameter with the [ lcid ] attribute.