docs: def load_rc(self, path=None, system=False):
          """
          Load the conda configuration file.
  
          If both user and system configuration exists, user will be used.
          """
          if os.path.isfile(self.user_rc_path) and not system:
              path = self.user_rc_path
          elif os.path.isfile(self.sys_rc_path):
              path = self.sys_rc_path
  
          if not path or not os.path.isfile(path):
              return {}
  
          with open(path) as f:
              return yaml.load(f) or {}