# String.to_lowercase

## Function

Convert the string to lowercase.

## Syntax

```bt
string.to_lowercase()
```

## Parameters

No parameters.

## Return value

| Type | Description |
| ------ | ------ |
| String | Returns the new string after lowercase. |

## Example

```bt
text = 'Hello BT'
result = text.to_lowercase()

// Output: hello bt
print result
```

## Notes

- Use Rust string lowercase conversion rules.