async getMetaByMetadataId (id) {
    const metas = {
      tags: [],
      stars: [],
      series: null
    }

    let result
    result = await db('tags_mapping').where('metadataId', id).select('*')
    if (result) {
      for (const i in result) {
        metas.tags.push((await this.getMetaInfoByMetaId('tags', result[i].tagId)))
      }
    }

    result = await db('stars_mapping').where('metadataId', id).select('*')
    if (result) {
      for (const i in result) {
        metas.stars.push(await this.getMetaInfoByMetaId('stars', result[i].starId))
      }
    }

    result = await db('series_mapping').where('metadataId', id).select('*').first()
    if (result) {
      metas.series = (await this.getMetaInfoByMetaId('series', result.seriesId))
    }

    return metas
  }
Get meta list(tags,stars,series) by metadata id

@param {Int} id metadata id

@returns {Object} meta list