It is currently possible to create relationships to ca_occurrences via the representation_annotation UI, but there is no option to show representation_annotation relationships via the ca_occurrences UI. I'd also like to be able to show that relationship in the summary for an occurrence record. I tried to add the following to the ca_occurrences model:
$this->BUNDLES['ca_representation_annotations'] = array('type' => 'related_table', 'repeating' => true, 'label' => _t('Related annotations'));
This caused the bundle to appear in the ca_occurrences UI editor, but this created an undefined call in BundlableLabelableBaseModelWithAttributes.php
Essentially, I'd like to be able to relate a representation_annotation to an occurrence so that the relationship can be shown in the occurrence record. Furthermore, it would be really useful if one could then click on that relationship and view the related_annotation either from the occurrence editor, summary view and even pawtucket.