title: can two seperate organizations on the same business network be distinguished?
body: <p>Currently, I have two organizations on the same business network (org1 and org2) and I have different roles for participants set up in the model file as</p>
  
  <pre><code>participant Mailer identified by workerid {
    o String workerid
  }
  participant Processor identified by wid {
    o String wid
  }
  </code></pre>
  
  <p>is there a way to add a rule in the permissions file so that only admins from org1 can create Mailers and only admins from org2 can create Processors. something along the lines of</p>
  
  <pre><code>rule enableOrg1ToCreateMailers {
    description: "Enable admin from org 1 to create Mailers"
    participant(t): "org.hyperledger.composer.system.NetworkAdmin"
    operation: CREATE
    resource: "demonetwork1.Mailer"
    condition: (t.organization.getidentifier() == "org1")
    action: ALLOW
  }
  </code></pre>