How to create subtype of WTDocument by API?

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@WhiteChen wrote:

We can use API to create new WTDocument, but we have a subtype under WTDocument, how can I create a subtype by API? Who could help me? Thanks in advanced.

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I know of 2 ways to do this. Method 1 where you find the TypeDefinitionReference and set the doc type and method 2 by using the PersistableAdapter.

Method 1:

//find the TypeIdentifier
TypeIdentifier myCustomType = TypeHelper.getTypeIdentifier("WCTYPE|wt.doc.WTDocument|com.mydomain.Document.myCustom");

//cast to WCTypeIdentifier
WCTypeIdentifier myCustomWCType = (WCTypeIdentifier) myCustomType;

//find the TypeDefinitionReference
TypeDefinitionReference myCustomTDR = TypedUtilityServiceHelper.service.getTypeDefinitionReference(myCustomWCType.getTypename());

//create doc
WTDocument doc = WTDocument.newWTDocument();

//set the doc TypeDefinitionReference
doc.setTypeDefinitionReference(myCustomTDR);

Method 2:

//Use the PersistableAdapter
PersistableAdapter obj = new PersistableAdapter("com.mydomain.Document.myCustom", locale, new CreateOperationIdentifier());