Method mark

core/src/main/java/io/grpc/internal/ReadableBuffer.java:136–136

Marks the current position in this buffer. A subsequent call to the #reset method repositions this stream at the last marked position so that subsequent reads re-read the same bytes.

()

   * bytes.
   */
  void mark();

  /**
   * Repositions this buffer to the position at the time {@link #mark} was last called on this