def self.disjoint_taxon_name_relationships
    self.parent.disjoint_taxon_name_relationships +
        self.collect_to_s(
            TaxonNameRelationship::Iczn::Invalidating::Synonym::Objective::UnjustifiedEmendation,
            TaxonNameRelationship::Iczn::Invalidating::Synonym::Objective::UnnecessaryReplacementName,