<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_name(self, env):
 """Attempts to get the name of the Builder. Look at the BUILDERS variable of env, expecting it to be a dictionary containing this Builder, and return the key of the dictionary. If there's no key, then return a directly-configured name (if there is one) or the name of the class (by default)."""


        try:
            index = list(env['BUILDERS'].values()).index(self)
            return list(env['BUILDERS'].keys())[index]
        except (AttributeError, KeyError, TypeError, ValueError):
            try:
                return self.name
            except AttributeError:
                return str(self.__class__)