code: def create(self, credentials, friendly_name=values.unset,
                 account_sid=values.unset):
          
          data = values.of({
              'Credentials': credentials,
              'FriendlyName': friendly_name,
              'AccountSid': account_sid,
          })
  
          payload = self._version.create(
              'POST',
              self._uri,
              data=data,
          )
  
          return AwsInstance(self._version, payload, )
docs: Create a new AwsInstance
  
          :param unicode credentials: A string that contains the AWS access credentials in the format <AWS_ACCESS_KEY_ID>:<AWS_SECRET_ACCESS_KEY>
          :param unicode friendly_name: A string to describe the resource
          :param unicode account_sid: The Subaccount this Credential should be associated with.
  
          :returns: Newly created AwsInstance
          :rtype: twilio.rest.accounts.v1.credential.aws.AwsInstance