Returns the membership Resource.
Returns Series metadata for the given series ids.
get(series_id)
  Returns Series metadata for the given series ids.
Args:
  series_id: string, String that identifies the series (required) (repeated)
Returns:
  An object of the form:
    {
    "series": [
      {
        "seriesId": "A String",
        "bannerImageUrl": "A String",
        "title": "A String",
        "imageUrl": "A String",
        "seriesType": "A String",
      },
    ],
    "kind": "books#series", # Resource type.
  }