### Method: `first()`

#### Overview:
The `first(value=false)` method is an asynchronous function that retrieves the first file from the store based on the current options, similar to the `get()` method but specifically for the first file.

**if value parameter set to true (false by default), return file with value.**

#### Functionality:
- This method is essentially a convenience function that sets the limit to 1, calls the `get()` method, and returns the first file (instance of File) in the results.

#### Implementation Details:
- Sets the `limit` option to 1 to ensure only the first file is fetched.
- Calls the `get()` method to retrieve the file.
- Returns the first file in the results array or `null` if no files are found.