private void buildPartial0(
            com.google.cloud.workstations.v1beta.WorkstationConfig.EphemeralDirectory
                    .GcePersistentDisk
                result) {
          int from_bitField0_ = bitField0_;
          if (((from_bitField0_ & 0x00000001) != 0)) {
            result.diskType_ = diskType_;
          }
          if (((from_bitField0_ & 0x00000002) != 0)) {
            result.sourceSnapshot_ = sourceSnapshot_;
          }
          if (((from_bitField0_ & 0x00000004) != 0)) {
            result.sourceImage_ = sourceImage_;
          }
          if (((from_bitField0_ & 0x00000008) != 0)) {
            result.readOnly_ = readOnly_;
          }
        }
<pre>
An EphemeralDirectory is backed by a Compute Engine persistent disk.
</pre>

Protobuf type {@code
google.cloud.workstations.v1beta.WorkstationConfig.EphemeralDirectory.GcePersistentDisk}
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfig.java