fun create_ast_representation(astbuilder: nullable ASTBuilder): AVisibility do
		if self.to_s == "public" then
			return new APublicVisibility
		else if self.to_s == "private" then
			return new APrivateVisibility
		else if self.to_s == "protected" then
			return new AProtectedVisibility
		else
			return new AIntrudeVisibility
		end
	end