How to override Create,write,unlink method in Odoo V8

As we all know, the Odoo 8 has the new API which is different with v7. How do I override the Create,write,unlink Orm method in Odoo 8?

let see it.

If you want override create method, you should have the model decorator.

@api. Modeldef Create (self,values): ......    

If you want override the Write method, you is not supposed to use write method,using multi decorator instead.

@api. Multidef Write (self,values): .............  

The same with unlink:

@api. Multidef unlink (self): .......    

How to override Create,write,unlink method in Odoo V8