class Excon::SSLSocket

def client_cert_data
  @client_cert_data ||= if (ccd = @data[:client_cert_data])
                          ccd
                        elsif (path = @data[:client_cert])
                          File.read path
                        elsif (path = @data[:certificate_path])
                          warn ":certificate_path is no longer supported and will be deprecated. Please use :client_cert or :client_cert_data"
                          File.read path
                        end
end