Title: Function with more clause and with guard expression
Goal: Inline the `get_elem/2' function in the body of the `f/1' function.
Parameters: [{file,"in14.erl"},{position,52}].
Documentation: The function `get_elem/2' function has a guard expression and consists of two function clauses and is the right expression of the match expression. There is no variable name conflict and no need to rename variables. The inline of the function application is allowed. A case expression is created from the copied function clauses, from the formal and actual parameters and from the guard expression. The function application is replaced with this case expression.

