docs: function getErrorField (error) {
      // if field is nested the get nested field
      if (error.baseProperty) {
          // get field from base property
          var field = _.find(this.fields, field => field.property === error.baseProperty)
          // get sub field
          return getSubField(field, error.index, error.property)
      }
      // return field
      else {
          return _.find(this.fields, field => field.property === error.property)
      }
  }