post https://api.securevan.com/v4/bargainingUnits
Use this endpoint to create a new Bargaining Unit.
Accepts a standard Bargaining Unit object with no read-only values specified.
If successful, the endpoint responds with HTTP Status Code 201 Created
and a Bargaining Unit object with the integer ID of the created Bargaining Unit in the response body. It also sets the Location header to the location of the Bargaining Unit.