public static ClearDeadServersRequest
    buildClearDeadServersRequest(Collection<ServerName> deadServers) {
    ClearDeadServersRequest.Builder builder = ClearDeadServersRequest.newBuilder();
    for (ServerName server : deadServers) {
      builder.addServerName(ProtobufUtil.toServerName(server));
    }
    return builder.build();
  }
Creates a protocol buffer GetNamespaceDescriptorRequest
@return a GetNamespaceDescriptorRequest
hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/RequestConverter.java