Macro define_command 

macro_rules! define_command {
    ($cmd_name:ident, $cmd_type:ty, $params_type:ty, $fn_name:ident, $result_type:ty) => { ... };
}

Macro to define a WebDriver BiDi command.

This macro generates a struct representing the command, an implementation block to create a new instance of the command, and an asynchronous function to send the command to the WebDriver BiDi session.

Parameters

• $cmd_name: The name of the command struct to be generated.
• $cmd_type: The type of the command parameters.
• $params_type: The type of the parameters passed to the command.
• $fn_name: The name of the function to send the command.
• $result_type: The type of the result returned by the command.