Reader for visualizing overlappingAMR data?


Pardon me I am very new to AMR. I am trying to visualize overlapping AMR data using paraview. By following the tutorial, I can output two types of files: one is of the following format:

<?xml version=“1.0”?>
<VTKFile type=“vtkOverlappingAMR” version=“1.1” byte_order=“LittleEndian” header_type=“UInt32”>
<vtkOverlappingAMR origin=“1.79769e+308 1.79769e+308 1.79769e+308” grid_description=“XYZ”>
<Block level=“0” spacing="-1 -1 -1">
<DataSet index=“0” amr_box=“0 9 0 9 0 9” file=“amr/amr_0.vti”>
<Block level=“1” spacing="-1 -1 -1">
<DataSet index=“0” amr_box=“0 9 0 9 0 9” file=“amr/amr_1.vti”>
<DataSet index=“1” amr_box=“10 19 10 19 10 19” file=“amr/amr_2.vti”>

with sub-directory in which there are .vti files for each block.

The other one is .vthb file output by the vtkCompositeDataWriter. However, the installation of Paraview (version 5.5.0) that I am using can visualize neither of them. It seems that there is available reader. What is the reader to visualize either one of these AMR data files? Appreciate your help, many thanks!