microsoft-azure-storage/src/com/microsoft/azure/storage/queue/CloudQueue.java
@DoesServiceRequest
    public boolean exists(QueueRequestOptions options, OperationContext opContext) throws StorageException {
        return this.exists(false, options, opContext);
    }
@DoesServiceRequest
    public boolean exists(QueueRequestOptions options, OperationContext opContext) throws StorageException {
        return this.exists(false, options, opContext);
    }
Returns a value that indicates whether the queue existse, using the specified request options and operation
context.

@param options
A {@link QueueRequestOptions} object that specifies any additional options for the request. Specifying
<code>null</code> will use the default request options from the associated service client (
{@link CloudQueueClient}).
@param opContext
An {@link OperationContext} object that represents the context for the current operation. This object
is used to track requests to the storage service, and to provide additional runtime information about
the operation.

@return <code>true</code> if the queue exists in the storage service, otherwise <code>false</code>.

@throws StorageException
If a storage service error occurred during the operation.