code: public LicenseTemplate getSingleLicenseTemplate(String key) throws GitLabApiException {
          Response response = get(Response.Status.OK, null, "licenses", key);
          return (response.readEntity(LicenseTemplate.class));
      }
docs: Get a single license template.
  
  GET /licenses
  
  @param key The key of the license template
  @return a LicenseTemplate instance
  @throws GitLabApiException if any exception occurs