Method of

api/src/main/java/io/grpc/Attributes.java:139–142

Factory method for creating instances of Key. @param debugString a string used to describe the key, used for debugging. @param Key type @return Key object @deprecated use #create instead. This method will be removed in the future.

(String debugString)

     * @deprecated use {@link #create} instead. This method will be removed in the future.
     */
    @Deprecated
    public static <T> Key<T> of(String debugString) {
      return new Key<>(debugString);
    }

    /**
     * Factory method for creating instances of {@link Key}.