public Builder mergeWorkstation(com.google.cloud.workstations.v1beta.Workstation value) {
      if (workstationBuilder_ == null) {
        if (((bitField0_ & 0x00000001) != 0)
            && workstation_ != null
            && workstation_
                != com.google.cloud.workstations.v1beta.Workstation.getDefaultInstance()) {
          getWorkstationBuilder().mergeFrom(value);
        } else {
          workstation_ = value;
        }
      } else {
        workstationBuilder_.mergeFrom(value);
      }
      if (workstation_ != null) {
        bitField0_ |= 0x00000001;
        onChanged();
      }
      return this;
    }
<pre>
Required. Workstation to update.
</pre>

<code>
.google.cloud.workstations.v1beta.Workstation workstation = 1 [(.google.api.field_behavior) = REQUIRED];
</code>
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/UpdateWorkstationRequest.java