Where could we get the dataset used by the vtk-examples?

Hello, guys:

There is a quick question, where could we get the data sets used for the vtk-examples, such as this one (https://kitware.github.io/vtk-examples/site/Cxx/Visualization/StreamLines/) and this one (https://kitware.github.io/vtk-examples/site/Cxx/Visualization/Kitchen/)

Thanks for your help!

Oh, we can find all kinds of data sets here (VTKExamples/src/Testing/Data at master · lorensen/VTKExamples · GitHub)