tosca_definitions_version: tosca_simple_yaml_1_2 
node_types:
  tosca.nodes.nfv.Sap:
    derived_from: tosca.nodes.nfv.Cp
    description: node definition of SAP.
    requirements:
      - external_virtual_link:
          capability: tosca.capabilities.nfv.VirtualLinkable
          relationship: tosca.relationships.nfv.VirtualLinksTo
          occurrences: [0, 1]
      - internal_virtual_link:
          capability: tosca.capabilities.nfv.VirtualLinkable
          relationship: tosca.relationships.nfv.VirtualLinksTo
          occurrences: [1, 1]