public Builder mergeAwsVms(com.google.cloud.vmmigration.v1.AwsVmsDetails value) {
      if (awsVmsBuilder_ == null) {
        if (sourceVmsCase_ == 3
            && sourceVms_ != com.google.cloud.vmmigration.v1.AwsVmsDetails.getDefaultInstance()) {
          sourceVms_ =
              com.google.cloud.vmmigration.v1.AwsVmsDetails.newBuilder(
                      (com.google.cloud.vmmigration.v1.AwsVmsDetails) sourceVms_)
                  .mergeFrom(value)
                  .buildPartial();
        } else {
          sourceVms_ = value;
        }
        onChanged();
      } else {
        if (sourceVmsCase_ == 3) {
          awsVmsBuilder_.mergeFrom(value);
        } else {
          awsVmsBuilder_.setMessage(value);
        }
      }
      sourceVmsCase_ = 3;
      return this;
    }
<pre>
The description of the VMs in a Source of type AWS.
</pre>

<code>.google.cloud.vmmigration.v1.AwsVmsDetails aws_vms = 3;</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/FetchInventoryResponse.java