'This is similar to mergePage, but a transformation matrix is
applied to the merged stream.
:param PageObject page2: The page to be merged into this one. Should be
an instance of :class:`PageObject<PageObject>`.
:param tuple ctm: a 6-element tuple containing the operands of the
transformation matrix
:param bool expand: Whether the page should be expanded to fit the dimensions
of the page to be merged.'

def mergeTransformedPage(self, page2, ctm, expand=False):

    self._mergePage(page2, (lambda page2Content: PageObject._addTransformationMatrix(page2Content, page2.pdf, ctm)), ctm, expand)
