lib/catissue/domain/consent_tier_status.rb
def statement_match?(other)
      ct = consent_tier
      oct = other.consent_tier
      ct.nil? or oct.nil? or ct.identifier == oct.identifier or ct.statement == oct.statement
    end
def statement_match?(other)
      ct = consent_tier
      oct = other.consent_tier
      ct.nil? or oct.nil? or ct.identifier == oct.identifier or ct.statement == oct.statement
    end
Returns true if this ConsentTierStatus ConsentTier is nil, the other ConsentTierStatus ConsentTier is nil,
 both ConsentTier identifiers are equal, or both ConsentTier statements are equal.