OperationParseException parseException(String error) {
            JsonLocation location = parser.currentLocation();
            return new OperationParseException(error + " at offset " + location.getByteOffset() +
                                               " (line " + location.getLineNr() + ", column " + location.getColumnNr() + ")");
        }
Same as {@link #feedMany(InputStream, ResultCallback)}, but without a provided {@link ResultCallback} instance.
@see JsonFeeder#feedMany(InputStream, ResultCallback) for details.
vespa-feed-client-api/src/main/java/ai/vespa/feed/client/JsonFeeder.java