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Error code: VFAV(3)

Error: alias clause lists a parenthesis alias for a feature without arguments
  or class has other feature with parenthesis alias.
What to do: ensure that class has at most one feature with parenthesis alias
  and that this feature has at least one argument.

Class: BB [G -> CC rename f as g alias "()" end]
Feature name: g
Line: 1
  ->class BB [G -> CC rename f as g alias "()" end]
  

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