'Set proxy configuration for future REST API calls.
:param str proxy_host: Hostname of the proxy to use.
:param int proxy_port: Port to connect to.
:param proxy_type: The proxy protocol to use. One of
PROXY_TYPE_HTTP, PROXY_TYPE_SOCKS4, PROXY_TYPE_SOCKS5.
Defaults to connection.PROXY_TYPE_HTTP.
:param bool proxy_rdns: Use the proxy host\'s DNS resolver.
:param str proxy_user: Username for the proxy.
:param str proxy_pass: Password for the proxy.'

@classmethod
def set_proxy_info(cls, proxy_host, proxy_port, proxy_type=PROXY_TYPE_HTTP, proxy_rdns=None, proxy_user=None, proxy_pass=None):

    cls._proxy_info = httplib2.ProxyInfo(proxy_type, proxy_host, proxy_port, proxy_rdns=proxy_rdns, proxy_user=proxy_user, proxy_pass=proxy_pass)
