o is null or To is not a subclass type of o. Otherwise, return o._d_dynamic_cast
private fn
void * _d_dynamic_cast(To)(const return scope Object o) @trustedDynamic cast from a class object o to class or interface To, where To is a subtype of o.
Parameters
o | instance of class |
To | class or interface that is a subtype of o |
Returns
null if