applications.go
func (c *ApplicationService) Create(ctx context.Context, data url.Values) (*Application, error) {
	application := new(Application)
	err := c.client.CreateResource(ctx, applicationPathPart, data, application)
	return application, err
}
func (c *ApplicationService) Create(ctx context.Context, data url.Values) (*Application, error) {
	application := new(Application)
	err := c.client.CreateResource(ctx, applicationPathPart, data, application)
	return application, err
}
// Create a new Application. This request must include a FriendlyName, and can
// include these values:
// https://www.twilio.com/docs/api/rest/applications#list-post-optional-parameters