```ruby
module Sepa
  class DanskeResponse < Response

    def bank_encryption_cert
      @bank_encryption_cert ||= extract_cert(doc, 'BankEncryptionCert', DANSKE_PKI)
    end

    def bank_signing_cert
      @bank_signing_cert ||= extract_cert(doc, 'BankSigningCert', DANSKE_PKI)
    end

    def bank_root_cert
      @bank_root_cert ||= extract_cert(doc, 'BankRootCert', DANSKE_PKI)
    end

    def own_encryption_cert
      @own_encryption_cert ||= extract_cert(doc, 'EncryptionCert', DANSKE_PKI)
    end

    def own_signing_cert
      @own_signing_cert ||= extract_cert(doc, 'SigningCert', DANSKE_PKI)
    end

    def ca_certificate
      @ca_certificate ||= extract_cert(doc, 'CACert', DANSKE_PKI)
    end

  end
end
```

Add find_node_by_uri to DanskeResponse since they use a slightly different method from identifying xml nodes
user
```ruby
module Sepa
  class DanskeResponse < Response

    def bank_encryption_cert
      @bank_encryption_cert ||= extract_cert(doc, 'BankEncryptionCert', DANSKE_PKI)
    end

    def bank_signing_cert
      @bank_signing_cert ||= extract_cert(doc, 'BankSigningCert', DANSKE_PKI)
    end

    def bank_root_cert
      @bank_root_cert ||= extract_cert(doc, 'BankRootCert', DANSKE_PKI)
    end

    def own_encryption_cert
      @own_encryption_cert ||= extract_cert(doc, 'EncryptionCert', DANSKE_PKI)
    end

    def own_signing_cert
      @own_signing_cert ||= extract_cert(doc, 'SigningCert', DANSKE_PKI)
    end

    def ca_certificate
      @ca_certificate ||= extract_cert(doc, 'CACert', DANSKE_PKI)
    end

    private

      def find_node_by_uri(uri)
        node = doc.at("[xml|id='#{uri}']")
        node.at('xmlns|Signature', xmlns: DSIG).remove
        node
      end

  end
end
```
assistant