Provides information on the version of the configuration information that is used to instantiate the current instance of the IFileTypeManager. This can be used to determine whether the instance is working with the latest version of configuration information that the host application requires.

For instance, applications may transfer their file type manager configuration information from one system to another. By checking this property the application can determine the state of the configuration, and perform additional tasks to ensure the configuration is in the format that the application requires (e.g. deploy additional filters that have only been released in the latest version of the application).