private FunctionTypeNode Signature() throws SyntaxException {
        try {
            Position pos = iterator.current().coordinates().starting();
            BlockDeclNode<FunctionTypeNode.ArgumentNode> args = 
                    new BlockDeclNode<FunctionTypeNode.ArgumentNode>(Parameters());
            BaseTypeNode result = Type();

            return new FunctionTypeNode(result, args, false, pos);
        } catch(SyntaxException ex) {
            throw ex;
        } catch(Exception ex) {
            throw (NonAnalysisException)new NonAnalysisException(ex)
                    .initPosition(iterator.current().coordinates().starting())
                    .Log("ru.bmstu.iu9.compiler.syntax");
        }
    }