1260. Charges on existing tenancy.

Where under a lease executed to give effect to the obligation to grant an extended lease1 the new tenancy2 takes effect subject to a subsisting charge on the existing tenancy, and at the time of its execution the person having the charge is by reason of it entitled to possession of the documents of title relating to the existing tenancy, he is similarly entitled to possession of the documents of title relating to the new tenancy; and the tenant