In Central Building, LLC v. Cooper (2005) 127 Cal.App.4th 1053, the guaranty agreements at issue were continuing guaranties that applied to a succession of lease amendments. However, the guarantors waived the revocation provisions of section 2815. (Central Building, supra, 127 Cal.App.4th at p. 1059.) Tipton focuses on the following passage from the Central Building opinion: "The guaranty of payment of a tenant's present and future rent liability is an example of a continuing guaranty. (See, e.g., Office Leasing (Cont.Ed.Bar 2004) Guaranty of Lease, 46.9, 46.24, pp. 1108, 1115-1117.) The guaranty agreement in this case applied to present and future obligations under the lease, and was a continuing guaranty, as specifically stated in paragraph 5 of the agreement." (Central Building, supra, at p. 1059.)