docs: def declare_selfvars(self):
          """
          A block to declare self variables
          """
  
          #
          # Object desc block
          #
          self.str_desc                   = ''
          self.__name__                   = "pfdicom"
          self.str_version                = '1.6.0'
  
          # Directory and filenames
          self.str_workingDir             = ''
          self.str_inputDir               = ''
          self.str_inputFile              = ''
          self.str_extension              = ''
          self.str_outputFileStem         = ''
          self.str_ouptutDir              = ''
          self.str_outputLeafDir          = ''
          self.maxDepth                   = -1
  
          # pftree dictionary
          self.pf_tree                    = None
          self.numThreads                 = 1
  
          self.str_stdout                 = ''
          self.str_stderr                 = ''
          self.exitCode                   = 0
  
          self.b_json                     = False
          self.b_followLinks              = False
  
          # The actual data volume and slice
          # are numpy ndarrays
          self.dcm                        = None
          self.d_dcm                      = {}     # dict convert of raw dcm
          self.strRaw                     = ""
          self.l_tagRaw                   = []
  
          # Simpler dictionary representations of DICOM tags
          # NB -- the pixel data is not read into the dictionary
          # by default
          self.d_dicom                   = {}     # values directly from dcm ojbect
          self.d_dicomSimple             = {}     # formatted dict convert
  
          # Convenience vars
          self.tic_start                  = None
  
          self.dp                         = None
          self.log                        = None
          self.tic_start                  = 0.0
          self.pp                         = pprint.PrettyPrinter(indent=4)
          self.verbosityLevel             = 1