public void Compile()
        {
            if (_statements.Count == 0 || !(_statements[_statements.Count - 1] is ReturnExpression))
            {
                if (_ctx.ReturnType != typeof(void))
                {
                    throw new InvalidOperationException("Non void method body last expression is not return expression");
                }
                AddStatement(Expr.Return());
            }

            _ctx.Compile(_statements);
        }