Check if namespace id exists.
This operation must behave exactly like the DescribeNamespace API, except it does not contain a response body.
The access token received from the authorization server in the OAuth 2.0 flow.
string identifier of an object in a namespace, following the Lance Namespace spec.
When the value is equal to the delimiter, it represents the root namespace.
For example, v1/namespace/$/list performs a ListNamespace on the root namespace.
An optional delimiter of the string identifier, following the Lance Namespace spec.
When not specified, the $ delimiter must be used.
Success, no content