 then return absolute paths to samples, if false then paths are relative to the given directory</span>
<span class="sd">        list_valid_filenames_in_directory_function: This is a custom dataset processing callback.</span>
<span class="sd">            It should return a list of valid file names for the given class.</span>
<span class="sd">            It has the following function signature:</span>

<span class="sd">            .. highlight:: python</span>
<span class="sd">            .. code-block:: pytho