class Excon::SSLSocket

def client_key_data
  @client_key_data ||= if (ckd = @data[:client_key_data])
                         ckd
                       elsif (path = @data[:client_key])
                         File.read path
                       elsif (path = @data[:private_key_path])
                         warn ":private_key_path is no longer supported and will be deprecated. Please use :client_key or :client_key_data"
                         File.read path
                       end
end