How to pass Map in SOQL in Salesforce

public static void TestMethod (Map<Id,Opportunity> oppMap){
        List<UID__c> uidList = new List<UID__c>();
        Map<Id,UID__c> uidMap = new Map<Id,UID__c> ();
        for(UID__c mpuid : [SELECT Id, Active__c,Opportunity__c FROM UID__c WHERE Opportunity__c IN: oppMap.keyset()]){
           uidMap.put(uid.id,uid);
        }
   
    }