This section of the Docker Extension API reference describes the `exec` property within the `ExtensionCli` interface. Introduced in version 0.2.0, this property provides functionality related to executing commands within the Docker environment. Specifically, the `exec` property is of type `Exec`, suggesting it offers methods or attributes for initiating and managing command executions. Further details about the `Exec` type, its methods, and its parameters can be found in the documentation for the `Exec` interface itself. This functionality is crucial for extensions that need to interact with containers or the Docker daemon by running commands directly.