code: def _get_depencency_var_name(self, dependency):
          
          for dep_path, var_name in self.dependencies:
              if dep_path == dependency:
                  return var_name
docs: Returns the variable name assigned to the given dependency or None if the dependency has
          not yet been registered.
  
          Args:
              dependency (str): Thet dependency that needs to be imported.
  
          Returns:
              str or None