Method key

api/src/context/java/io/grpc/Context.java:149–151

Create a Key with the given debug name. @param debugString a name intended for debugging purposes and does not impact behavior. Multiple different keys may have the same debugString. The value should be not null.

(String debugString)

   *                    The value should be not null.
   */
  public static <T> Key<T> key(String debugString) {
    return new Key<>(debugString);
  }

  /**
   * Create a {@link Key} with the given debug name and default value.