code: func (c *Client) FormationInfo(appIdentity string, formationIdentity string) (*Formation, error) {
  	var formation Formation
  	return &formation, c.Get(&formation, "/apps/"+appIdentity+"/formation/"+formationIdentity)
  }
docs: // Info for a process type
  //
  // appIdentity is the unique identifier of the Formation's App.
  // formationIdentity is the unique identifier of the Formation.