Function fillInsideFrame

fillInsideFrame(
    page: any,
    elementSelectorKey: string,
    frameSelectorKey: string,
    valueKey: string,
): Promise<void>
Fills an input field located inside a specific <iframe>. Supports fixtures for reusable selectors and values.
Parameters
- page: any
- elementSelectorKey: string
- frameSelectorKey: string
- valueKey: string
Returns Promise<void>
Example
```
When I pw fill "selectors.cardNumberInput" inside frame "selectors.checkoutFrame" with "values.cardNumber"
```
- Defined in backend/elements/frames.ts:35