This method reads a Spreadsheet file from the local file system, converts it's range to the desired json file, and returns the converted result. \nThe source file path and target format must be specified correctly. \nEnsure that the necessary permissions are in place to read the source file and write the converted file if applicable. \nThe conversion process occurs entirely on the cloud server, eliminating the need for any cloud storage or external downloads. \nIf the source file does not exist, is inaccessible, or if an error occurs during the conversion process, an appropriate exception will be thrown. \nSupported formats for conversion depend on the available libraries and their capabilities....developers to integrate spreadsheet processing capabilities across...