Resolution:
If the intention is to pass this method as a parameter to another method expecting a delegate, then use the keyword METHOD as in the example.
Example:
class-id a. method-id main static. invoke M2(M1) *> Error invoke M2(method M1) *> ok end method. method-id M1 (s as string) static. end method. method-id M2 (del as type Del) static. end method. end class. delegate-id Del (s as string) end delegate.