Pending PCDM [issue 48](https://github.com/duraspace/pcdm/issues/48), this should use `pcdm:hasRelatedObject` instead of `ore:aggregates`: https://github.com/projecthydra-labs/hydra-pcdm/blob/master/lib/hydra/pcdm/models/concerns/pcdm_behavior.rb#L10
Pending PCDM issue 48, this should use
pcdm:hasRelatedObjectinstead ofore:aggregates: https://github.com/projecthydra-labs/hydra-pcdm/blob/master/lib/hydra/pcdm/models/concerns/pcdm_behavior.rb#L10