code: private static Environment loadClasspath(@NonNull String classpath) {
          var path = classpath;
          if (classpath.startsWith(HttpConst.SLASH)) {
              path = classpath.substring(1);
          }
          InputStream is = getDefault().getResourceAsStream(path);
          if (null == is) {
              return EMPTY_ENV;
          }
          return of(is);
      }
docs: Load classpath file to Environment
  
  @param classpath classpath url
  @return return Environment instance