def read
      filtered_entries.each do |file_path|
        full_path = collection_dir(file_path)
        next if File.directory?(full_path)
        if Utils.has_yaml_header? full_path
          read_document(full_path)
        else
          read_static_file(file_path, full_path)
        end
      end
      docs.sort!
    end
def read
      filtered_entries.each do |file_path|
        full_path = collection_dir(file_path)
        next if File.directory?(full_path)
        if Utils.has_yaml_header? full_path
          read_document(full_path)
        else
          read_static_file(file_path, full_path)
        end
      end
      docs.sort!
    end
Read the allowed documents into the collection's array of docs.

 Returns the sorted array of docs.