code: private void initializeCustomDialog() {
          MaterialDialog.Builder builder = new MaterialDialog.Builder(getActivity());
          configureHeaderDialogBuilder(builder);
          configureButtonBarDialogBuilder(builder);
          builder.setView(R.layout.custom_dialog_content);
          builder.setCustomTitle(R.layout.custom_dialog_title);
          builder.setCustomMessage(R.layout.custom_dialog_message);
          builder.setCustomButtonBar(R.layout.custom_dialog_button_bar);
          builder.setCustomHeader(R.layout.custom_dialog_header);
          customDialog = builder.create();
      }
docs: Initializes the custom dialog.