static boolean maybeSuspendingFunction(Method method) {
        return Arrays.stream(method.getParameters())
                     .anyMatch(param -> isContinuation(param.getType()));
    }
Returns true if the last parameter of a method is a {@code kotlin.coroutines.Continuation}.
core/src/main/java/com/linecorp/armeria/internal/server/annotation/KotlinUtil.java