message: BUG: Force wrapping of ExtractPhaseImageFilter
  When using itk_wrap_image_filter with dimension restriction, the
  macro verifies that the dimension parameter is included in CMake
  ITK_WRAP_IMAGE_DIMS variable.
  Because RTK handle wrapping of dimension 1 regardless of
  ITK_WRAP_IMAGE_DIMS value, this filter should not use the macro if we
  want to ensure that it is wrapped for Python.
diff: itk_wrap_class("rtk::ExtractPhaseImageFilter" POINTER)
  - itk_wrap_image_filter("${WRAP_ITK_REAL}" 1 1)
  + # WARNING: Do not use "itk_wrap_image_filter(${WRAP_ITK_REAL} 1 1)" macro.
  + # The "itk_wrap_image_filter" macro verifies that the dimension parameter
  + # exists in ITK_WRAP_IMAGE_DIMS before wrapping anything.
  + # Instead, RTK should force wrapping of dimension 1 even if it was not
  + # requested in ITK_WRAP_IMAGE_DIMS.
  + foreach(t ${WRAP_ITK_REAL})
  + itk_wrap_template("I${ITKM_${t}}1" "itk::Image<${ITKT_${t}}, 1>")
  + endforeach()
  itk_end_wrap_class()
  