@Deprecated
    public GraphqlServiceBuilder instrumentation(Iterable<? extends Instrumentation> instrumentations) {
        checkState(graphql == null, "graphql() and instrumentation() are mutually exclusive.");
        requireNonNull(instrumentations, "instrumentations");
        if (this.instrumentations == null) {
            this.instrumentations = ImmutableList.builder();
        }
        this.instrumentations.addAll(instrumentations);
        return this;
    }
Adds the {@link Instrumentation}s.

@deprecated Use {@link #graphql(GraphQL)} instead. You can specify a {@link Instrumentation} to
            {@link GraphQL.Builder#instrumentation(Instrumentation)}.
graphql/src/main/java/com/linecorp/armeria/server/graphql/GraphqlServiceBuilder.java