@Override
    public Map<String, String> getParameters() {
      return pSpec.getPartitions().get(index).getParameters();
    }
Iterator implementation to iterate over all Partitions within the PartitionSpecWithSharedSDProxy.
standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/partition/spec/PartitionSpecWithSharedSDProxy.java