### Sorting Methods in Store Class

#### Sorting Properties

- **Purpose**: To define how files in the store can be sorted.
- **Available Properties for Sorting**:
  - `name`: Sorts files based on their names.
  - `stats.size`, `stats.birthtime`, etc.: Sorts files based on specific statistics like size, creation time, etc.
  - Any other custom property defined in the files.

#### Specifying Sorting Order

- **Ascending Order**: By default, files are sorted in ascending order based on the chosen property.
- **Descending Order**: To sort in descending order, you can use either of the following methods:
  - Prefix the property name with a minus sign (`-`). For example, `-name` sorts files by name in descending order.
  - Use the `desc()` method after specifying the sorting property. For example, if you have set the sorting property as `name`, calling `desc()` will sort the files by name in descending order.

### Usage Examples

1. **Ascending Order**:
   - `.sort('name')`: Sorts files by name in ascending order.
   - `.sort('stats.size')`: Sorts files by size in ascending order.

2. **Descending Order**:
   - `.sort('-name')`: Sorts files by name in descending order.
   - `.sort('stats.size').desc()`: Sorts files by size in descending order.

These sorting methods allow users to organize files in the `Store` according to specific criteria, either in ascending or descending order, enhancing the flexibility and usability of the file management system.