OptionalhandlerHandler should be specified if method is handler. Possible handlers are
defined in UpdateStepHandler.
Method of step to be performed.
Name that will be used to save downloaded file.
OptionalpropertiesAdditional properties can be specified in an object. Properties are method and handler specific.
OptionalscriptURL of a script that will be downloaded.
URL that will be used to download or upload a file.
Step or action that will be executed by updated.