Add utility method to intersect and union two BrowseSelection maps

Description

provide 2 static utility methods:

static Map<String,BrowseSelection> union(Map<String,BrowseSelection>... maps)

and

static Map<String,BrowseSelection> intersect(Map<String,BrowseSelection>... maps)

Environment

None

Assignee

Sheng Guo

Reporter

John Wang

Labels

None

Components

Fix versions

Priority

Major
Configure