This class represents a Destination (for example, the destination of the output of a transformation)
in which the results are written to a newly constructed DOM tree in memory. The caller must supply
a Document node, which will be used as the root of the constructed tree
Return a Receiver. Saxon calls this method to obtain a Receiver, to which it then sends
a sequence of events representing the content of an XML document.
pipe - The Saxon configuration. This is supplied so that the destination can
use information from the configuration (for example, a reference to the name pool)
to construct or configure the returned Receiver.