const RESERVED_NAMESPACE_XMLNS: (Prefix<'_>, Namespace<'_>);Expand description
That constant define the one of reserved namespaces for the xml standard.
The prefix xmlns is used only to declare namespace bindings and is by definition bound
to the namespace name http://www.w3.org/2000/xmlns/. It must not be declared or
undeclared. Other prefixes must not be bound to this namespace name, and it must not be
declared as the default namespace. Element names must not have the prefix xmlns.