Method ServiceController():getLastError() Foundation
Retrieves the number of the last error.
:getLastError() --> nError
This instance method returns the number of the last error. When no error occurred, the return value is 0.
When an error occurs, this method returns the error number of the operating system. Note that this method is executed by an instance of the ServiceController class. An instance is registered with :addController() and can be retrieved with :getUpdatedControl().
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