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Q:

The Sitecore.Data.Items.ItemUtil class includes three very similar methods.  What is the difference between AssertItemName, IsItemNameValid, and GetItemNameError?

A:

1. IsItemNameValid returns true if the given name is valid, false otherwise.
2. GetItemNameError returns a string explaining why the given name is not valid.
3. AssertItemName throws an exception if the given name is not valid.
   
   AssertItemNameuses the other methods as follows:
   
     if (!IsItemNameValid(name)) {
       throw SomeException(GetItemNameError(name));
     }