Create a dummy antigen command.
  
    $ antigen-dummy () {
    >   echo me dummy
    > }
  
  Check the normal way of calling it
  
    $ antigen-dummy
    me dummy
  
  Call with the wrapper syntax.
  
    $ antigen dummy
    me dummy
  
  Call with an alias
  
    $ alias a=antigen
    $ a dummy
    me dummy