def create(self, friendly_name, configuration,<EOL>assignment_callback_url=values.unset,<EOL>fallback_assignment_callback_url=values.unset,<EOL>task_reservation_timeout=values.unset):
data = values.of({<EOL>'<STR_LIT>': friendly_name,<EOL>'<STR_LIT>': configuration,<EOL>'<STR_LIT>': assignment_callback_url,<EOL>'<STR_LIT>': fallback_assignment_callback_url,<EOL>'<STR_LIT>': task_reservation_timeout,<EOL>})<EOL>payload = self._version.create(<EOL>'<STR_LIT:POST>',<EOL>self._uri,<EOL>data=data,<EOL>)<EOL>return WorkflowInstance(self._version, payload, workspace_sid=self._solution['<STR_LIT>'], )<EOL>
Create a new WorkflowInstance

:param unicode friendly_name: A string representing a human readable name for this Workflow.
:param unicode configuration: JSON document configuring the rules for this Workflow.
:param unicode assignment_callback_url: A valid URL for the application that will process task assignment events.
:param unicode fallback_assignment_callback_url: If the request to the AssignmentCallbackUrl fails, the assignment callback will be made to this URL.
:param unicode task_reservation_timeout: An integer value controlling how long in seconds TaskRouter will wait for a confirmation response from your application after assigning a Task to a worker.

:returns: Newly created WorkflowInstance
:rtype: twilio.rest.taskrouter.v1.workspace.workflow.WorkflowInstance