public static com.google.cloud.workstations.v1.WorkstationConfig.Host.GceInstance parseFrom(
          java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
          throws com.google.protobuf.InvalidProtocolBufferException {
        return PARSER.parseFrom(data, extensionRegistry);
      }
<pre>
Optional. The size of the boot disk for the VM in gigabytes (GB).
The minimum boot disk size is `30` GB. Defaults to `50` GB.
</pre>

<code>int32 boot_disk_size_gb = 9 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The bootDiskSizeGb.
java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationConfig.java