Returns the chain to which the certificate belongs.
This property contains a reference to the chain, to which the certificate belongs.
It has Nothing/null/nil value in most of cases, but if the certificate is taken from the chain, this property is set.
Note, that you can find out, whether the certificate is an end-entity one, by performing the following check (in pseudo-code):
EndEntity = (Certificate.Chain = <Nothing/null/nil>) OR (Certificate.Chain.Certificates = Certificate)