@java.lang.Override
          public Builder mergeFrom(
              com.google.protobuf.CodedInputStream input,
              com.google.protobuf.ExtensionRegistryLite extensionRegistry)
              throws java.io.IOException {
            if (extensionRegistry == null) {
              throw new java.lang.NullPointerException();
            }
            try {
              boolean done = false;
              while (!done) {
                int tag = input.readTag();
                switch (tag) {
                  case 0:
                    done = true;
                    break;
                  case 8:
                    {
                      enableSecureBoot_ = input.readBool();
                      bitField0_ |= 0x00000001;
                      break;
                    } // case 8
                  case 16:
                    {
                      enableVtpm_ = input.readBool();
                      bitField0_ |= 0x00000002;
                      break;
                    } // case 16
                  case 24:
                    {
                      enableIntegrityMonitoring_ = input.readBool();
                      bitField0_ |= 0x00000004;
                      break;
                    } // case 24
                  default:
                    {
                      if (!super.parseUnknownField(input, extensionRegistry, tag)) {
                        done = true; // was an endgroup tag
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                      break;
                    } // default:
                } // switch (tag)
              } // while (!done)
            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
              throw e.unwrapIOException();
            } finally {
              onChanged();
            } // finally
            return this;
          }
<pre>
A set of Compute Engine Shielded instance options.
</pre>

Protobuf type {@code
google.cloud.workstations.v1beta.WorkstationConfig.Host.GceInstance.GceShieldedInstanceConfig}
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfig.java