code: func (r Tag) GetTagByTagName(tagList *string) (resp []datatypes.Tag, err error) {
  	params := []interface{}{
  		tagList,
  	}
  	err = r.Session.DoRequest("SoftLayer_Tag", "getTagByTagName", params, &r.Options, &resp)
  	return
  }
docs: // Returns the Tag object with a given name. The user types in the tag name and this method returns the tag with that name.