#includeIn this example, the variable `temperature` is assigned the float value associated with the "temperature" key in the JSON object. The `get_float` function is part of the ArduinoJson library, which is a package library for using JSON with Arduino devices. It provides classes to parse, generate, and manipulate JSON data in a memory-efficient way.JsonObject root = doc.to (); // Initialize the JSON object float temperature = root["temperature"].getFloat(); // Get the float value associated with the "temperature" key