'宣言 Public MustOverride Function GetFirstChild() As XmlNodeWrapperBase
'使用法 Dim instance As XmlNodeWrapperBase Dim value As XmlNodeWrapperBase value = instance.GetFirstChild()
public abstract XmlNodeWrapperBase GetFirstChild()
'宣言 Public MustOverride Function GetFirstChild() As XmlNodeWrapperBase
'使用法 Dim instance As XmlNodeWrapperBase Dim value As XmlNodeWrapperBase value = instance.GetFirstChild()
public abstract XmlNodeWrapperBase GetFirstChild()