protected static Instance getInstance(String feedName, String instanceId, Map<String, Object> propertyMap) {
    return new Instance(
        feedName,
        instanceId,
        (String) propertyMap.get(INSTANCE_STATUS_PROPERTY_ID),
        (String) propertyMap.get(INSTANCE_START_TIME_PROPERTY_ID),
        (String) propertyMap.get(INSTANCE_END_TIME_PROPERTY_ID),
        (String) propertyMap.get(INSTANCE_DETAILS_PROPERTY_ID),
        (String) propertyMap.get(INSTANCE_LOG_PROPERTY_ID));
  }
Construct a provider.

@param ivoryService    the ivory service
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/InstanceResourceProvider.java