public String getUrl() {
        return this.url;
    }
The URL from the API Gateway proxy that you set up to talk to your key server. This parameter is required for
SPEKE encryption and is not valid for static key encryption.

@return The URL from the API Gateway proxy that you set up to talk to your key server. This parameter is required
        for SPEKE encryption and is not valid for static key encryption.
aws-java-sdk-mediaconnect/src/main/java/com/amazonaws/services/mediaconnect/model/UpdateEncryption.java