code: public List<org.openprovenance.prov.model.Role> getRole() {
  	if (role == null) {
  	    role=AttributeList.populateKnownAttributes(this, all, org.openprovenance.prov.model.Role.class);
  	} 
  	return this.role;
      }
docs: Gets the value of the role property.
  
  <p>
  This accessor method returns a reference to the live list,
  not a snapshot. Therefore any modification you make to the
  returned list will be present inside the JAXB object.
  This is why there is not a <CODE>set</CODE> method for the role property.
  
  <p>
  For example, to add a new item, do as follows:
  <pre>
  getRole().add(newItem);
  </pre>
  
  
  <p>
  Objects of the following type(s) are allowed in the list
  {@link org.openprovenance.prov.xml.Role }