public Builder setEmailBytes(
          com.google.protobuf.ByteString value) {
        if (value == null) {
    throw new NullPointerException();
  }
  checkByteStringIsUtf8(value);
        bitField0_ |= 0x00000004;
        email_ = value;
        onChanged();
        return this;
      }
<code>optional string email = 3;</code>
@param value The bytes for email to set.
@return This builder for chaining.
core/src/test/java/com/alibaba/fastjson2/protobuf/PersonOuterClass.java