public void setOperator(String operator) {
    this.operator = operator;
  }
Excludes specific regions from the rebalance, if {@link #getIncludeRegions()} is empty,
otherwise has no effect
default: no regions are excluded

@param excludeRegions a list of region names to exclude from the rebalance operation
geode-management/src/main/java/org/apache/geode/management/operation/RebalanceOperation.java