Google collect import in Drools

When I try to import MultiMap in Drools rule it caused an error below

[11,25]: [ERR 102] Line 11:25 mismatched input 'COLLECT' expecting 'identifier' in import 

Does anyone know how can开发者_C百科 I import any com.google.common.collect in Drools rule?

P.S. Problem soleved If anyone is interested you should use backquotes like below

com.google.common.`collect`.Multimap

Problem soleved If anyone is interested you should use backquotes like below

com.google.common.`collect`.Multimap