public CompletableFuture<Void> feedMany(InputStream jsonStream, ResultCallback resultCallback) {
        return feedMany(jsonStream, 1 << 26, resultCallback);
    }
Feeds a stream containing a JSON array of feed operations on the form
<pre>
    [
      {
        "id": "id:ns:type::boo",
        "fields": { ... document fields ... }
      },
      {
        "put": "id:ns:type::foo",
        "fields": { ... document fields ... }
      },
      {
        "update": "id:ns:type:n=4:bar",
        "create": true,
        "fields": { ... partial update fields ... }
      },
      {
        "remove": "id:ns:type:g=foo:bar",
        "condition": "type.baz = \"bax\""
      },
      ...
    ]
</pre>
Note that {@code "id"} is an alias for the document put operation.
Exceptional completion will use be an instance of {@link FeedException} or one of its sub-classes.
The input stream will be closed upon exhaustion, or error.
vespa-feed-client-api/src/main/java/ai/vespa/feed/client/JsonFeeder.java