public UpdateFlowSourceRequest withProtocol(String protocol) {
        setProtocol(protocol);
        return this;
    }
The protocol that is used by the source.

@param protocol
       The protocol that is used by the source.
@return Returns a reference to this object so that method calls can be chained together.
@see Protocol
aws-java-sdk-mediaconnect/src/main/java/com/amazonaws/services/mediaconnect/model/UpdateFlowSourceRequest.java