The Module symbol table works just like the Function symbol table when it -comes to name conflicts: if a new function is created with a name was previously -added to the symbol table, it will get implicitly renamed when added to the +comes to name conflicts: if a new function is created with a name that was previously +added to the symbol table, the new function will get implicitly renamed when added to the Module. The code above exploits this fact to determine if there was a previous definition of this function.