H&J Ditching & Excavating, Inc., was hired by JRSF, LLC, to perform excavating and grading work on Terra Firma, a residential construction project in West Knox County, Tennessee. Cornerstone Community Bank financed the project with a loan to JRSF. As the work progressed, H&J received payments totaling 90 percent of the price on its contract. JRSF then defaulted on the loan from Cornerstone, and Cornerstone foreclosed and took possession of the property. H&J filed a suit in a Tennessee state court against the bank to recover the final payment on its contract. The bank responded that H&J had not received its payment because it had failed to obtain an engineer's certificate of final completion, a condition under its contract with JRSF. H&J responded that it had completed all the work it had contracted to do. What type of contract condition does obtaining the engineer's certificate represent? Is H&J entitled to the final payment? Discuss.