code: def get_lock_requests(self):
          
          d = defaultdict(list)
          if self._context:
              for variant in self._context.resolved_packages:
                  name = variant.name
                  version = variant.version
                  lock = self.patch_locks.get(name)
                  if lock is None:
                      lock = self.default_patch_lock
  
                  request = get_lock_request(name, version, lock)
                  if request is not None:
                      d[lock].append(request)
          return d
docs: Take the current context, and the current patch locks, and determine
          the effective requests that will be added to the main request.
  
          Returns:
              A dict of (PatchLock, [Requirement]) tuples. Each requirement will be
              a weak package reference. If there is no current context, an empty
              dict will be returned.