private void startFixedPartitionAttributes(Attributes atts) {
    FixedPartitionAttributesImpl fpai = new FixedPartitionAttributesImpl();
    String partitionName = atts.getValue(PARTITION_NAME);
    if (partitionName != null) {
      fpai.setPartitionName(partitionName);
    }
    String isPrimary = atts.getValue(IS_PRIMARY);
    if (isPrimary != null) {
      fpai.isPrimary(parseBoolean(isPrimary));
    }
    String numBuckets = atts.getValue(NUM_BUCKETS);
    if (numBuckets != null) {
      fpai.setNumBuckets(parseInt(numBuckets));
    }
    Object a = stack.peek();
    if (a instanceof PartitionAttributesImpl) {
      ((PartitionAttributesImpl) a).addFixedPartitionAttributes(fpai);
    }
  }
When a <code>fixed-partition-attributes</code> element is encountered, we create an instance of
FixedPartitionAttributesImpl and add it to the PartitionAttributesImpl stack.
geode-core/src/main/java/org/apache/geode/internal/cache/xmlcache/CacheXmlParser.java