Searching for datastore based on name

Hi

As part of the provision workflow I need to validate if the given datastore name is already in use (i.e. datastore with the same name already exist).

I can see that VcPlugin has an api, getAllDatastores() that takes filter object. Not sure how to use this filter object.

Can you please help me with the syntax for finding a datastore based on the name using filter object? In case there is other way to figure this out, instead of re-iterating through the list of all datastores in the system please let me know.

Thanks and Regards,

Salil