code: def all_childnodes_to_nifti1img(h5group):
      
      child_nodes = []
      def append_parent_if_dataset(name, obj):
          if isinstance(obj, h5py.Dataset):
              if name.split('/')[-1] == 'data':
                  child_nodes.append(obj.parent)
  
      vols = []
      h5group.visititems(append_parent_if_dataset)
      for c in child_nodes:
          vols.append(hdfgroup_to_nifti1image(c))
  
      return vols
docs: Returns in a list all images found under h5group.
  
      Parameters
      ----------
      h5group: h5py.Group
          HDF group
  
      Returns
      -------
      list of nifti1Image