Method not available on this version
This method is only available on newer versions.
The first available version (v2_6_3) is shown here.
private_key=(key)
public
Sets this client’s SSL private
key
# File lib/bundler/vendor/net-http-persistent/lib/net/http/persistent.rb, line 835
def private_key= key
@private_key = key
reconnect_ssl
end