public List<Insert> getInsertions() {
    if (null == inserts) {
      return Collections.emptyList();
    }

    return inserts;
  }
Gets the insertion directives.

@return the inserts, or an empty list (never {@code null}).
ambari-server/src/main/java/org/apache/ambari/server/stack/upgrade/ConfigUpgradeChangeDefinition.java