public Collection < String > getAllowedMethods ( String requestMethod ) { Constraint . ensureNotEmpty ( requestMethod , String . format ( "Invalid method '%s'" , requestMethod ) ) ; Set < String > rtAllowedMethods = new HashSet < String > ( allowedMethods ) ; rtAllowedMethods . add ( requestMethod . toUpperCase ( ) ) ; return rtAllowedMethods ; }
Return all methods allowed by the resource including the preflight request method