code: def add_dependencies(self, task, params={}, **options): 
          
          path = "/tasks/%s/addDependencies" % (task)
          return self.client.post(path, params, **options)
docs: Marks a set of tasks as dependencies of this task, if they are not
          already dependencies. *A task can have at most 15 dependencies.*
  
          Parameters
          ----------
          task : {Id} The task to add dependencies to.
          [data] : {Object} Data for the request
            - dependencies : {Array} An array of task IDs that this task should depend on.