https://developer.adobe.com/experience-manager/reference-materials/cloud-service/javadoc/org/apache/poi/ss/formula/EvaluationWorkbook.ExternalName.html
EvaluationWorkbook.ExternalName (The Adobe Experience Manager SDK...
adobe experience managersdk
https://poi.apache.org/apidocs/dev/org/apache/poi/ss/formula/EvaluationWorkbook.ExternalSheet.html
EvaluationWorkbook.ExternalSheet (POI API Documentation)
poiapidocumentation