docs: def parse_child_instance(self, node):
          """
          Parses <ChildInstance>
  
          @param node: Node containing the <ChildInstance> element
          @type node: xml.etree.Element
          """
  
          if 'component' in node.lattrib:
              component = node.lattrib['component']
          else:
              self.raise_error('<ChildInstance> must specify a component reference')
  
          self.current_structure.add_child_instance(ChildInstance(component))