'this attribute is used by testresources for optimized
sorting of tests.
This is the big requirement that allows testresources to sort
tests such that database "resources" can be kept open for
many tests at once.
IMO(zzzeek) "sorting" should not be needed; only that necessary
resources stay open as long as they are needed (or long enough to
reduce overhead).  testresources would be improved to not depend on
custom, incompatible-with-pytest "suite classes", fixture information
leaking out of the Fixture classes themselves, and exotic sorting
schemes for something that can nearly always be handled "good enough"
with unittest-standard setupclass/setupmodule schemes.'

@property
def resources(self):

    return self.FIXTURE.resources_collection(self)
