public static Object premissiveUnwrap(TemplateModel model) throws TemplateModelException 
{
        return unwrap(model, true);
}

Same as #unwrap(TemplateModel) , but it doesn't throw exception if it doesn't know how to unwrap the object, but returns it as is.

 public static Object unwrap(TemplateModel model) throws TemplateModelException 
{
                                                                                                                                                                                                                                                                              
        return unwrap(model, false);
}

Unwraps TemplateModel -s recursively. The converting of the TemplateModel object happens with the following rules:
1. If the object implements AdapterTemplateModel , then the result of AdapterTemplateModel#getAdaptedObject(Class) for Object.class is returned.
2. If the object implements WrapperTemplateModel , then the result of WrapperTemplateModel#getWrappedObject() is returned.
3. If the object implements TemplateScalarModel , then the result of TemplateScalarModel#getAsString() is returned.
4. If the object implements TemplateNumberModel , then the result of TemplateNumberModel#getAsNumber() is returned.
5. If the object implements TemplateDateModel , then the result of TemplateDateModel#getAsDate() is returned.
6. If the object implements TemplateBooleanModel , then the result of TemplateBooleanModel#getAsBoolean() is returned.
7. If the object implements TemplateSequenceModel or TemplateCollectionModel , then a java.util.ArrayList is constructed from the subvariables, and each subvariable is unwrapped with the rules described here (recursive unwrapping).
8. If the object implements TemplateHashModelEx , then a java.util.HashMap is constructed from the subvariables, and each subvariable is unwrapped with the rules described here (recursive unwrapping).
9. Throw a TemplateModelException, because it doesn't know how to unwrapp the object.