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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: AA
Feature: g alias "()" (a: ANY): BOOLEAN Version from: AA
Feature: f alias "()" (i: INTEGER_32) Version from: AA

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