Test adding state with result that should be included in memory

Test adding state with result that should not be included in memory

Test that message manager initializes with system and task messages

Test handling of token overflow in a realistic message flow

Returns the JSON representation of the model. It uses langchain's `dumps` function to serialize the `message` property before encoding the ove

Custom validator that uses langchain's `loads` function to parse the message if it is provided as a JSON string.

Waits for an element matching the given CSS selector to become visible. Args: selector (str): The CSS selector of the element. timeo

Waits for the element specified by the CSS selector to become visible within the given timeout.