# writeLine method

1. @override

Future<void> writeLine([

1. String? str

])
override

Writes a line of text to the buffer.

This method writes the specified string followed by a line separator. The line separator is platform-dependent and is obtained from the underlying writer.

## Implementation

    @override
    Future<void> writeLine([String? str]) async {
      if (str != null) {
        await write(str);
      }
      await write('\n');  // Using \n as the default line separator
    }