@Override
    public Serializer putShort(FieldBase field, short value) {
        serializeShort(generator, field, value);
        return this;
    }
Utility method to easily serialize a single document ID as a remove
operation.

@param docId
           the document to remove or which has been removed
@return a document remove operation serialised as UTF-8 encoded JSON for
        the input document ID
document/src/main/java/com/yahoo/document/json/JsonWriter.java