question: public SolrClusterOptions ( String clusterName , Integer clusterSize ) { this . clusterName = clusterName ; if ( clusterSize == null ) { this . clusterSize = FREE_CLUSTER_SIZE ; } else { Validator . isTrue ( ( clusterSize > 0 ) , "clusterSize cannot be lower than 0" ) ; this . clusterSize = clusterSize . toString ( ) ; } }
target:  Instantiates options to create a new Solr cluster of the specified size.