def push_unicast(device_tokens, opts={})
      params = {
        device_tokens: device_tokens,
        type: 'unicast',
        production_mode: opts[:production_mode]
      }
      case @plantform
      when 'Android'
        params.merge! android_params(opts)
        push(params)
      when 'iOS'
        params.merge! ios_params(opts)
        push(params)
      end
    end
def push_unicast(device_tokens, opts={})
      params = {
        device_tokens: device_tokens,
        type: 'unicast',
        production_mode: opts[:production_mode]
      }
      case @plantform
      when 'Android'
        params.merge! android_params(opts)
        push(params)
      when 'iOS'
        params.merge! ios_params(opts)
        push(params)
      end
    end
单播