> Multimap<String, Object> queryParams = addQueryParams(tokenValues,
> invocation);
> - Multimap<String, String> headers = buildHeaders(tokenValues,
> invocation);
> +
> + Multimap<String, String> headers;
> +
> + if (caller != null) {
> + headers = buildHeaders(tokenValues, caller);
> + headers.putAll(buildHeaders(tokenValues, invocation));
> + } else {
> + headers = buildHeaders(tokenValues, invocation);
To avoid the duplication of the `buildHeaders` call, something like"
```
Multimap<String, String> headers;
if (caller == null) {
headers = LinkedHashMultimap.create();
} else {
headers = buildHeaders(tokenValues, caller);
}
// invocation values override caller values
headers.putAll(buildHeaders(tokenValues, invocation));
```
?
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