<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def proxy_manager_for(self, proxy, **proxy_kwargs):
 """Called to initialize the HTTPAdapter when a proxy is used."""

        try:
            proxy_kwargs['ssl_version'] = ssl.PROTOCOL_TLS
        except AttributeError:
            proxy_kwargs['ssl_version'] = ssl.PROTOCOL_SSLv23
        return super(SSLAdapter, self).proxy_manager_for(proxy, **proxy_kwargs)