code: function getSectionSubsectionsFromFieldset($, $fieldset) {
      // Create a subsections object to return.
      var subsections = {};
  
      // Iterate through each Table ("Subsection").
      $fieldset.children('table').each(function(i) {
        var $table            = $(this),
            subsectionName    = getSubsectionNameFromTable($, $table),
            subsectionFields  = {};
  
        // If we couldn't extract a name from the subsection, generate one and mark the title as hidden.
        if(!subsectionName) {
          subsectionName = 'Untitled Subsection #' + (i + 1);
          subsectionFields.notitle = true;
        }
  
        // Add any extracted fields to the fields hash.
        addSubsectionFieldsFromTable($, subsectionFields, $table);
  
        subsections[subsectionName] = subsectionFields;
      });
  
      return subsections;
    }
docs: Extract the subsections for this section from the given $fieldset.