Note that in Lisp you can assume (and the test cases do assume) that slot names and variable names are simply Lisp identifiers. The values will still be integers. If a search fails, return #f

You will need to provide definitions for the functions add-identifier, add-binding, make-binding, get-filler-dynamic, get-filler-static, make-frame, pop-frame, and push-frame. You may want to have functions creating empty environments, binding lists, and identifier lists, or identifiers bound to the appropriate values. The test cases assume that the identifier empty-environment is bound to an appropriate value. The functions define, load, newline, set!, and print are provided by Scheme.

It is a good idea to structure your code in terms of abstract data types with explicit selectors, constructors, and perhaps mutators. You may also want to define predicates such as empty-environment?

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