code: public ServerBuilder http2MaxFrameSize(int http2MaxFrameSize) {
          checkArgument(http2MaxFrameSize >= MAX_FRAME_SIZE_LOWER_BOUND &&
                        http2MaxFrameSize <= MAX_FRAME_SIZE_UPPER_BOUND,
                        "http2MaxFramSize: %s (expected: >= %s and <= %s)",
                        http2MaxFrameSize, MAX_FRAME_SIZE_LOWER_BOUND, MAX_FRAME_SIZE_UPPER_BOUND);
          this.http2MaxFrameSize = http2MaxFrameSize;
          return this;
      }
docs: Sets the maximum size of HTTP/2 frame that can be received. Defaults to
  {@link Flags#defaultHttp2MaxFrameSize()}.