src/main/java/com/passkit/grpc/Flights/CarrierOuterClass.java
public Builder clearPrivateKeyId() {
        
        privateKeyId_ = getDefaultInstance().getPrivateKeyId();
        onChanged();
        return this;
      }
/**
       * <pre>
       * If PassKit are generating the boarding pass barcode, and the barcode needs signing, the ID of the private key used to sign the barcode payload.
       * </pre>
       *
       * <code>string privateKeyId = 7;</code>
       * @return This builder for chaining.
       */

If PassKit are generating the boarding pass barcode, and the barcode needs signing, the ID of the private key used to sign the barcode payload.

string privateKeyId = 7;
@return This builder for chaining.
If PassKit are generating the boarding pass barcode and the barcode needs signing the ID of the private key used to sign the barcode payload . string privateKeyId = 7 ; @return This builder for chaining .
public Builder clearPrivateKeyId() {
        privateKeyId_ = getDefaultInstance().getPrivateKeyId();
        onChanged();
        return this;
      }
public Builder clearPrivateKeyId ( ) { privateKeyId_ = getDefaultInstance ( ) . getPrivateKeyId ( ) ; onChanged ( ) ; return this ; }
<pre>
 If PassKit are generating the boarding pass barcode, and the barcode needs signing, the ID of the private key used to sign the barcode payload.
<pre > If PassKit are generating the boarding pass barcode and the barcode needs signing the ID of the private key used to sign the barcode payload .