@NotNull
  List<? extends PsiMember> getSymbolMembers(@NotNull Set<? extends PsiClass> qualifiers) {
    return isCall ? ApproximateResolver.getPossibleMethods(qualifiers, referenceName, argCount)
                  : ApproximateResolver.getPossibleNonMethods(qualifiers, referenceName);
  }
@NotNull
  List<? extends PsiMember> getSymbolMembers(@NotNull Set<? extends PsiClass> qualifiers)