public Builder mergeWorkstationConfig(
        com.google.cloud.workstations.v1beta.WorkstationConfig value) {
      if (workstationConfigBuilder_ == null) {
        if (((bitField0_ & 0x00000004) != 0)
            && workstationConfig_ != null
            && workstationConfig_
                != com.google.cloud.workstations.v1beta.WorkstationConfig.getDefaultInstance()) {
          getWorkstationConfigBuilder().mergeFrom(value);
        } else {
          workstationConfig_ = value;
        }
      } else {
        workstationConfigBuilder_.mergeFrom(value);
      }
      if (workstationConfig_ != null) {
        bitField0_ |= 0x00000004;
        onChanged();
      }
      return this;
    }
<pre>
Required. Config to create.
</pre>

<code>
.google.cloud.workstations.v1beta.WorkstationConfig workstation_config = 3 [(.google.api.field_behavior) = REQUIRED];
</code>
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/CreateWorkstationConfigRequest.java