如何屏蔽Protobuf中的某些字段

syntax = "proto3";

package model;

option java_package = "test.demo.services.protobuf.customer.model";
option java_outer_classname = "CustomerProto";

message Accounts {
  repeated Account account = 1;
}

message Account {

  int32 id = 1;
  string number = 2;
  int32 customer_id = 3;

}

 message Customers {
   repeated Customer customers = 1;
}

message Customer {

  int32 id = 1;
  string pesel = 2;
  string name = 3;
  CustomerType type = 4;
  repeated Account accounts = 5;

  enum CustomerType {
    INDIVIDUAL = 0;
    COMPANY = 1;
  }

}

下面是示例测试代码

package test.demo.services.protobuf.customer.model;

import org.junit.Test;
import test.demo.services.protobuf.customer.model.CustomerProto.Customer;
import com.google.protobuf.util.FieldMaskUtil;


public class TestMerge {


  @Test
  public void eraseFields() {

        Customer request = Customer.newBuilder().setId(10).setPesel("12345").setName("Harry Alto").build();
    // Erase name
      Customer.Builder modifieldRequest = Customer.newBuilder();
      FieldMaskUtil.merge(FieldMaskUtil.fromString("name"), request, modifieldRequest);
      System.out.println( modifieldRequest.build().toString());
}

}

以下是输出:

name: "Harry Alto"

id: 10
pesel: "12345"

有办法做我想做的吗