Tosca Template definition for node 'A' :
----------------------------------------

    A:
      type: tosca.nodes.Root
      properties:
        prop1: 12
        prop2: tagada
      requirements:
        - A2B:
            relationship: tosca.relationships.ConnectsTo
            node: B
        - A2C:
            relationship: tosca.relationships.ConnectsTo
            node: C
        - host:
            relationship: tosca.relationships.HostedOn
            node: srvA
      capabilities:
        scalable:
          properties:
            min_instances: 1
            max_instances: 5
            default_instances: 3
      interfaces:
        Standard:
          inputs:
             toto: a
             num: 5
          create: mon_create.sh
          configure:
            inputs:
              nb_a: 3
              toto: b
            implementation: mon_configure.sh

Internal representation for node A (inside Conul) :
---------------------------------------------------

Key = "Model/un_model/A"
Value =
{
 'name': 'A',
 'type': 'tosca.nodes.Root',
 'nb': 3,
 'scalability_path': '3:3',
 'nb_min': 1,
 'nb_max': 5,
 'properties': {'prop1': 12, 'prop2': 'tagada'},
 'operations': {
   'tosca.interfaces.node.lifecycle.Standard.configure':
      {'inputs':
          {'nb_a': 3, 'num': 5, 'toto': 'b'},
       'name': 'mon_configure.sh'
      },
   'tosca.interfaces.node.lifecycle.Standard.create':
      {'inputs':
          {'num': 5, 'toto': 'a'},
       'name': 'mon_create.sh'
      }
  },
 'state': 'none',
 'step': 0,
 'in': {
    'tosca.relationships.DependsOn': [],
    'tosca.relationships.ConnectsTo': [],
    'tosca.relationships.HostedOn': []
 },
 'out': {
    'tosca.relationships.DependsOn': [],
    'tosca.relationships.ConnectsTo': ['un_model/B', 'un_model/C'],
    'tosca.relationships.HostedOn': ['un_model/srvA']}
 }
}