tosca_definitions_version: tosca_simple_yaml_1_0_0
node_types: 
  tosca.nodes.nfv.ext.ImageFile: 
    derived_from: tosca.nodes.Root
    properties: 
      file_url: 
        type: string
        required: false
      container_type: 
        type: string
        required: false
      name: 
        type: string
        required: false
      disk_format: 
        type: string
        required: false
      version: 
        type: string
        required: false
    capabilities: 
      guest_os: 
        type: tosca.capabilities.nfv.ext.GuestOs
      image_fle: 
        type: tosca.capabilities.nfv.ext.ImageFile