EDIT

    $content['footnotes'] = markup_to_render_array(render_footnotes_annotation_and_sources());

            $block->content[] = markup_to_render_array(render_annotation_footnotes($feature_node->term->uuid));

    $block->content[] = markup_to_render_array(render_annotation_footnotes(UUID_DISTRIBUTION));

  $footnotes .= render_footnotes($footnote_key_suggestion); // FIXME is this needed at all?

  $footnotes .= render_annotation_footnotes($footnote_key_suggestion);

const FOOTNOTE_KEY_SUFFIX_ANNOTATIONS = '-annotations';

 * possible keys for

 *     - annotation footnotes:

 *       - RenderHints::getFootnoteListKey().FOOTNOTE_KEY_SUFFIX_ANNOTATIONS

 *    method calls by calling RenderHints::getFootnoteListKey(). NOTE: the footnote key for annotations will be set to

 *    RenderHints::getFootnoteListKey().'-annotations'.

 * Fetches the list of visible annotations for each of the cdm entities and returns the footnote keys for them.

 *

 * The footnotes are passed to the FootnoteManager in order to store the annotations and to create the footnote keys.

 *

 * @see cdm_fetch_visible_annotations()

 *

 * @param array $cdm_entities

 *   An array of CdmBase instances.

 * @param $footnote_list_key_suggestion string

 *    optional parameter. If this parameter is left empty (null, 0, "") the footnote key will be determined be set to

 *    RenderHints::getFootnoteListKey().FOOTNOTE_KEY_SUFFIX_ANNOTATIONS otherwise the supplied key will be used.

 *

 * @return array of footnote keys

 *

 * @deprecated unused, needs to be removed

 */

function cdm_entities_annotations_footnote_keys(array $cdm_entities, $footnote_list_key_suggestion = NULL) {

  $foot_note_keys = [];

  foreach ($cdm_entities as $cdm_entity) {

    $foot_note_keys = array_merge($foot_note_keys, cdm_entity_annotations_as_footnote_keys($cdm_entity,$footnote_list_key_suggestion));

  }

  return $foot_note_keys;

}

/**

 * @param $footnote_list_key_suggestion string

 *    optional parameter. If this parameter is left empty (null, 0, "") the footnote key will be determined be set to

 *    RenderHints::getFootnoteListKey().'-annotations' otherwise the supplied key will be used.

function cdm_entity_annotations_as_footnote_keys(stdClass $cdm_entity, $footnote_list_key_suggestion = NULL) {

  // Getting the key for the FootnoteManager.

  if (isset($footnote_list_key_suggestion)) {

    $footnote_list_key = $footnote_list_key_suggestion;

  } else {

    $footnote_list_key = RenderHints::getFootnoteListKey() . FOOTNOTE_KEY_SUFFIX_ANNOTATIONS;

    throw new Exception("FOOTNOTE_KEY_SUFFIX_ANNOTATIONS");

 * Created and registers footnotes in the FootnoteManager and returns the

 * footnote keys as markup.

 *

 * The following cdm cdm classes are annotatable:

 *

 * - DescriptionElementBase

 * - EventBase

 * - HomotypicalGroup

 * - IdentifiableEntity

 * - DescriptionBase

 * - IdentifiableMediaEntity

 * - Media

 * - Sequence

 * - TaxonBase

 * - TaxonName

 * - TaxonomicTree

 * - TermBase

 * - LanguageStringBase

 * - ReferencedEntityBase

 * - NomenclaturalStatus

 * - OriginalSourceBase

 * - RelationshipBase

 * - TypeDesignationBase

 * - TaxonNode

 * - WorkingSet

 *

 * @param array $cdm_entities

 *   An array of CdmBase instances.

 * @param $footnote_list_key_suggestion string

 *    optional parameter. If this parameter is left empty (null, 0, "") the

 *   footnote key will be determined be set to

 *   RenderHints::getFootnoteListKey().FOOTNOTE_KEY_SUFFIX_ANNOTATIONS otherwise the supplied

 *   key will be used.

 *

 * @return string

 *   The markup.

 * @deprecated unused, needs to be removed

 */

function render_entities_annotations_as_footnote_keys(array $cdm_entities, $footnote_list_key =null){

  // check if footnotes for annotations are disabled completely

  if (variable_get('cdm_dataportal_annotations_footnotes', CDM_DATAPORTAL_ALL_FOOTNOTES)) {

    return '';

  }

  $markup = '';

  $footNoteKeys = cdm_entities_annotations_footnote_keys($cdm_entities, $footnote_list_key);

  foreach ($footNoteKeys as $a) {

    $markup .= render_footnote_key($a, ($markup ? ',' : ''));

  }

  return $markup;

}

/**

 * Create markup for the footnotes mapped to the $footnoteListKey.

 *

 * @param null $footnote_list_key

 *  The footnote list key, see RenderHints::getFootnoteListKey()

 * @param $element_tag

 *  The tag for the footnote element

 *

 * @return string

 */

function render_annotation_footnotes($footnote_list_key = null, $element_tag = 'span') {

  if (variable_get('cdm_dataportal_annotations_footnotes', CDM_DATAPORTAL_ALL_FOOTNOTES)) {

    return '';

  }

  return render_footnotes($footnote_list_key . FOOTNOTE_KEY_SUFFIX_ANNOTATIONS, $element_tag);

}

/**

/**

 * Renders the footnotes for annotations and sources, etc.

 *

 * @param string $footnote_list_key

 *    RenderHints::getFootnoteListKey() will be used if this parameter is undefined.

 * @param string $enclosingTag

 *    Default tag is 'span'

 *

 * @return string

 *    The markup string

 * @deprecated to be replaced by render_footnotes() once FOOTNOTE_KEY_SUFFIX_ANNOTATIONS is no longer used

 */

function render_footnotes_annotation_and_sources($footnote_list_key = NULL, $enclosingTag = 'span'){

  if (variable_get('cdm_dataportal_all_footnotes', CDM_DATAPORTAL_ALL_FOOTNOTES)) {

    return '';

  }

  if(!$footnote_list_key){

    $footnote_list_key = RenderHints::getFootnoteListKey();

  }

  $out = '<' . $enclosingTag . ' class="footnotes footnotes-' . $footnote_list_key . ' ">'

    . FootnoteManager::renderFootnoteList($footnote_list_key . FOOTNOTE_KEY_SUFFIX_ANNOTATIONS) . ' ' . FootnoteManager::renderFootnoteList($footnote_list_key)

    . '</' . $enclosingTag . '>';

  FootnoteManager::removeFootnoteList($footnote_list_key . FOOTNOTE_KEY_SUFFIX_ANNOTATIONS);

  FootnoteManager::removeFootnoteList($footnote_list_key);

  return $out;

}

  $render_array['nomenclatural_act']['footnotes'] = markup_to_render_array(render_footnotes_annotation_and_sources(),

  $footnotes .= render_annotation_footnotes($footnote_list_key,'li');

  $out .= render_annotation_footnotes(RenderHints::getRenderPath());

  $out .= render_annotation_footnotes(RenderHints::getFootnoteListKey(), 'li');

  $out .= render_annotation_footnotes(RenderHints::getFootnoteListKey(), 'li');