<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def set_package_releases(self, project_name, versions):
 """ Storage package information in ``self.packages`` Args: project_name (str):
 This will be used as a the key in the dictionary. versions (list):
 List of ``str`` representing the available versions of a project. """

        self.packages[project_name] = sorted(versions, reverse=True)