docs: def getDirectoryDictionary(self,args):
          """
          This is an internal method to compute a dictionary containing
          all the directories that potentially contain (more) input.
          The dictionary 'table' indicates which of its contents are part of the input:
  
          table[directory] == 'ALL' means that its entire content must be mapped
          table[directory] == 'ext' means that only content with the extension 'ext' are mapped
          table[directory] == 'ext1,ext2' means that only content with either extension 'ext1'
                              or 'ext2' are mapped
  
          Note that there is a special symbol MapConstants.placeholderNoExtensionFilter
          that enables the filtering for files without an extension.
          """
          table = {}
          for element in args.path:
              # If the element is a directory, the dictionary entry is set to 'ALL':
              if os.path.isdir(element):
                  if element not in table:
                      table[element] = 'ALL'
              # If the element is a file, its extension is added to the dictionary entry:
              else:
                  path = os.path.dirname(element)
                  extension = os.path.splitext(element)[1]
                  # If there is no extension, a '.' was missing. This happens when calling:
                  # map -r [command] path/to/folder/*ext
                  # and the folder 'folder' DOES NOT contain files with the extension 'ext'.
                  # In this case, there is no wildcard expansion and we must create the
                  # proper extension manually:
                  if extension == '':
                      extension = '.' + os.path.basename(element).split("*")[-1]
                  if path not in table:
                      table[path] = extension
                  elif table[path] != 'ALL' and extension not in table[path]:
                      table[path] = table[path] + "," + extension
          return table