public ImportTr34KeyBlock withKeyBlockFormat(Tr34KeyBlockFormat keyBlockFormat) {
        this.keyBlockFormat = keyBlockFormat.toString();
        return this;
    }
<p>
The key block format to use during key import. The only value allowed is <code>X9_TR34_2012</code>.
</p>

@param keyBlockFormat
       The key block format to use during key import. The only value allowed is <code>X9_TR34_2012</code>.
@return Returns a reference to this object so that method calls can be chained together.
@see Tr34KeyBlockFormat
aws-java-sdk-paymentcryptography/src/main/java/com/amazonaws/services/paymentcryptography/model/ImportTr34KeyBlock.java