code: public static UsingPath dropIndex(String namespace, String keyspace, String indexName) {
          return new DefaultDropPath().drop(namespace, keyspace, indexName);
      }
docs: Drop a secondary index in the given namespace:keyspace.
  
  @param namespace the namespace prefix (will be escaped).
  @param keyspace the keyspace (bucket, will be escaped).
  @param indexName the name of the index to be dropped (will be escaped).