CMake Error at .*/Modules/Documentation.cmake:15 \(message\):
  Documentation.cmake is VTK-specific code and should not be used in non-VTK
  projects.  This logic in this module is best shipped with the project using
  it rather than with CMake.  This is now an error according to policy
  CMP0106.
Call Stack \(most recent call first\):
  CMP0106-Common.cmake:10 \(include\)
  CMP0106-NEW.cmake:4 \(include\)
  CMakeLists.txt:7 \(include\)