public static ClearRegionBlockCacheRequest
    buildClearRegionBlockCacheRequest(List<RegionInfo> hris) {
    ClearRegionBlockCacheRequest.Builder builder = ClearRegionBlockCacheRequest.newBuilder();
    hris.forEach(hri -> builder
      .addRegion(buildRegionSpecifier(RegionSpecifierType.REGION_NAME, hri.getRegionName())));
    return builder.build();
  }
Creates a protocol buffer ClearRegionBlockCacheRequest
@return a ClearRegionBlockCacheRequest
hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/RequestConverter.java