loadRawBytes(ptr, numBytes) {
	        if (this.buffer != this.memory.buffer) {
	            this.updateViews();
	        }
	        const result = new Uint8Array(numBytes);
	        result.set(this.viewU8.slice(ptr, ptr + numBytes));
	        return result;
	    }
Load raw bytes from ptr.
@param ptr The head address
@param numBytes The number