private void buildPartial0(
            com.google.cloud.workstations.v1.WorkstationConfig.PersistentDirectory
                    .GceRegionalPersistentDisk
                result) {
          int from_bitField0_ = bitField0_;
          if (((from_bitField0_ & 0x00000001) != 0)) {
            result.sizeGb_ = sizeGb_;
          }
          if (((from_bitField0_ & 0x00000002) != 0)) {
            result.fsType_ = fsType_;
          }
          if (((from_bitField0_ & 0x00000004) != 0)) {
            result.diskType_ = diskType_;
          }
          if (((from_bitField0_ & 0x00000008) != 0)) {
            result.sourceSnapshot_ = sourceSnapshot_;
          }
          if (((from_bitField0_ & 0x00000010) != 0)) {
            result.reclaimPolicy_ = reclaimPolicy_;
          }
        }
<pre>
A PersistentDirectory backed by a Compute Engine regional persistent
disk. The
[persistent_directories][google.cloud.workstations.v1.WorkstationConfig.persistent_directories]
field is repeated, but it may contain only one entry. It creates a
[persistent
disk](https://cloud.google.com/compute/docs/disks/persistent-disks) that
mounts to the workstation VM at `/home` when the session starts and
detaches when the session ends. If this field is empty, workstations
created with this configuration do not have a persistent home
directory.
</pre>

Protobuf type {@code
google.cloud.workstations.v1.WorkstationConfig.PersistentDirectory.GceRegionalPersistentDisk}
java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationConfig.java