how do i get the coordinates of atoms from the output of the 'vtkPDBReader' object?

[mwestphal (Mathieu Westphal (Kitware))]

@erya123

how could it get the information of molecule of protein and amino acid , the coordinates of the atom, etc?

The code is here: https://gitlab.kitware.com/vtk/vtk/-/blob/master/IO/Chemistry/vtkPDBReader.cxx?ref_type=heads