'宣言 Protected Overridable Function CreateDocument() As C1.Document.C1Document
'使用法 Dim instance As C1DocumentSource Dim value As C1.Document.C1Document value = instance.CreateDocument()
protected virtual C1.Document.C1Document CreateDocument()
'宣言 Protected Overridable Function CreateDocument() As C1.Document.C1Document
'使用法 Dim instance As C1DocumentSource Dim value As C1.Document.C1Document value = instance.CreateDocument()
protected virtual C1.Document.C1Document CreateDocument()