
admin.groupSetCompressedTreeCachePartitions( config as element(configuration), group-id as (Number|String), value as Number ) as element(configuration)
		  This function changes the compressed tree cache
		  partitions setting of the group with the specified ID
		  to the specified value. More partitions allow more
		  concurrency, but make each individual cache partition
		  smaller, which could make it more likely for the cache
		  to fill up. This is a "cold" operation; when you use
	      
	      admin.saveConfiguration to save the
		  configuration, it will automatically restart MarkLogic
		  Server.
          
          If the Cache Sizing method is set to automatic,
          enode, or dnode (by means of the
          admin:group-set-cache-sizing function or the Admin UI),
          this function sets the compressed tree cache partitions for the group configuration, 
          but it is not used until the Cache Sizing method is set to manual.
          When the  Cache Sizing method is automatic, enode or
          dnode, MarkLogic will set the cache partitions and ignore any manual settings.
          
http://marklogic.com/xdmp/privileges/admin/group
http://marklogic.com/xdmp/privileges/admin/group/{id}
  
  const admin = require('/MarkLogic/admin.xqy');
  const config = admin.getConfiguration()
  const groupid = admin.groupGetId(config, "Default")
  admin.groupSetCompressedTreeCachePartitions(config, groupid, 2)
   //returns the new configuration element -- use admin.saveConfiguration
   //to save the changes to the configuration or pass the configuration
   //to other Admin API functions to make other changes.  
  
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