A Cisco engineer is developing a custom application that can run natively in Cisco NX-OS on Nexus 9000 and Nexus 3000 platforms. For the NX-SDK application to run, the engineer enables the NX-SDK feat

clicmd.printConsole() is a function used for printing output to the console from a CLI command, not a class that defines command handling.

postCliCb is a callback function that might be invoked after a CLI command is executed, but it is not the class responsible for defining or handling the custom CLI commands themselves.

In the Cisco NX-SDK for Python, the `pyCmdHandler` class is specifically designed to register and manage custom CLI commands within an NX-SDK application. When custom CLI commands are defined within the `sdkThread` function, an instance of `pyCmdHandler` is used to map these commands to their respective callback functions, allowing the application to respond to user input via the CLI.

nx_sdk_py.void_to_int is a utility function for type conversion within the SDK, not related to defining custom CLI command handlers.