@Override
    public DescribeChannelResult apply(DescribeChannelRequest describeChannelRequest) {
        return client.describeChannel(describeChannelRequest);
    }
Makes a call to the operation specified by the waiter by taking the corresponding request and returns the
corresponding result

@param describeChannelRequest
       Corresponding request for the operation
@return Corresponding result of the operation
aws-java-sdk-medialive/src/main/java/com/amazonaws/services/medialive/waiters/DescribeChannelFunction.java