storing pair in Solr document

[Ninad Raut]

Hi,
I have a Entitiy and a Value associated with it. I want to store this value
as a <key,value> pair in Solr.
I have a Java Object which I am mapping to Solr Doc using
org.apache.solr.client.solrj.beans.Field . Can I also store a Map? and how
can I do so?
This is how I want it to be done:
@Field
 Map<String,String> entity;