Prototype: or(...)
Return type: boolean
Description: Returns any if any argument evaluates to true and !any if
any argument evaluates to false.
Arguments: A list of classes, class expressions, or functions that return classes.
Example:
commands:
  "/usr/bin/generate_config $(config)"
    if => or( "force_configs",
              not(fileexists("/etc/config/$(config)"))
            );Notes: Introduced primarily for use with if
 and unless
 promise attributes.
History: