anchor.diff:  
   #### Response body schema
   
  -**[root]** [String]: Each VM's details are separated by a newline.
  +**[root]** [String]: For each instance there is one line of JSON. The JSON contains the following details.
   
   - **agent_id** [String]: Unique ID of the Agent associated with the VM.
   - **vm_cid** [String]: Cloud ID of the VM.
  
positive.code: - **disk_cid** [String or null]: Cloud ID of the associated persistent disk if one is attached.
  - **job_name** [String]: Name of the job.
  - **index** [Integer]: Numeric job index.
  - **resurrection_paused** [Boolean]: Whether or not ressurector will try to bring back the VM is it goes missing.
  - **job_state** [String]: Aggregate state of job. Possible values: `running` and other values that represent unhealthy state.
  - **ips** [Array of strings]: List of IPs.
  - **dns** [Array of strings]: List of DNS records.
  
negative.code: 
  **[root]** [Array]: List of instances.
  
  - **agent_id** [String]: Unique ID of the Agent associated with the VM. Could be `nil` if there is no VM for this instance.
  - **cid** [String]: Cloud ID of the VM. Could be `nil` if there is no VM for this instance.
  - **job** [String]: Name of the job.
  - **index** [Integer]: Numeric job index.
  - **id** [String]: ID of the instance.
  