@java.lang.Override
        public com.google.cloud.workstations.v1beta.WorkstationConfig.EphemeralDirectory
                .GcePersistentDisk
            build() {
          com.google.cloud.workstations.v1beta.WorkstationConfig.EphemeralDirectory
                  .GcePersistentDisk
              result = buildPartial();
          if (!result.isInitialized()) {
            throw newUninitializedMessageException(result);
          }
          return result;
        }
<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