A property map of Java String objects, represented by the java.util.Map interface. The concrete class used by the engines is org.apache.commons.collections.map.ListOrderedMap data type.
This XML node defines a property-map with the name veggie-data with 4 name value pairs. Items in the list are contained within <entry key="xxx"> nodes. Property maps are sometimes used to represent a single row of data from a database query. The keys map to column names and the value maps to that column's data.