Resolving dependencies at runtime, specifically checking for the existence of a function within a module dynamically, is not possible in Move. However, you can determine the existence of a specific resource at a particular address using exists(addr) (more details can be found in the documentation. It's important to note that the resource type T must be known at compile-time. Unfortunately, dynamically calling functions based on their existence within Move module at runtime is not supported in programming language.

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