Query for tenants using a list of parameters and retrieves the count.
Basic authentication header of the form Basic <encoded-value>, where <encoded-value> is the base64-encoded string username:password.
Filter by the id of the tenant.
Filter by the name of the tenant.
Filter by the name that the parameter is a substring of.
Select only tenants where the given user is a member of.
Select only tenants where the given group is a member of.
Select only tenants where the user or one of his groups is a member of.
Can only be used in combination with the userMember parameter. Value may only be true,
as false is the default behavior.
Request successful.
The number of matching instances.