private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.talent.v4.DeviceInfo,
            com.google.cloud.talent.v4.DeviceInfo.Builder,
            com.google.cloud.talent.v4.DeviceInfoOrBuilder>
        getDeviceInfoFieldBuilder() {
      if (deviceInfoBuilder_ == null) {
        deviceInfoBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.talent.v4.DeviceInfo,
                com.google.cloud.talent.v4.DeviceInfo.Builder,
                com.google.cloud.talent.v4.DeviceInfoOrBuilder>(
                getDeviceInfo(), getParentForChildren(), isClean());
        deviceInfo_ = null;
      }
      return deviceInfoBuilder_;
    }
<pre>
The type of device used by the job seeker at the time of the call to the
service.
</pre>

<code>.google.cloud.talent.v4.DeviceInfo device_info = 5;</code>
java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/RequestMetadata.java