from: taverna-prov
to: taverna-reference-api
evidence:
 - file: "taverna-prov/src/main/java/org/apache/taverna/prov/Saver.java"
   contains "import org.apache.taverna.reference.ExternalReferenceSPI;"

from: taverna-prov
to: taverna-reference-api
evidence:
 - file: "taverna-prov/src/main/java/org/apache/taverna/prov/W3ProvenanceExport.java"
   contains "import org.apache.taverna.reference.ErrorDocument;"