Returns the namespace prefix part of the given XML name.

For example, when the whole name is

xs:complexType
this property will return:
xs
The namespace prefix is a variable thing. Exactly, it depends on the context (i.e. the location within the XML document) where the XML name is used. The function adaptQName() allows adapting the prefix property of the given QName object according to a new context.

Note: If the XML Type associated with this template is defined to be namespace-unaware, this property always returns an empty string (no matter, whether the whole name starts with "prefix:").