Remove TKey
template keyword in `ElementCollection generics
#14271
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Description
Currently, we are specifying two generics keywords, however we are never needing to specify the first one (
TKey
) anywhere in the code.Removing it simplifies anything trying to extend or implement the
ElementCollection
class as you do not need to specify both values.This change means we can go from
ElementCollection<array-key, Address>
to simplyElementCollection<Address>
as we are now only specifying one@template
keyword.