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1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   stub
      1. <programming> A dummy procedure used when linking a program
      with a run-time library.  The stub routine need not contain
      any code and is only present to prevent "undefined label"
      errors at link time.
      2. <programming, networking> A local procedure in a remote
    procedure call.  The client calls the stub to perform some
      task and need not necessarily be aware that RPC is involved.
      The stub transmits parameters over the network to the server
      and returns the results to the caller.
      (1995-11-09)