 For example, a property developer contracts an agent to find him a designer for a golf course he wishes to build, but does not give a specific time for the completion of this task; it is an open agreement.Only when the developer has given a specific date for performance is the agent in "mora" (for failing to perform by that date).In "Willowdene Landowners v St Martin's Trust", the court addressed the question of how it is ascertained that the creditor's demand gave the debtor reasonable time to perform.