code: def parse_component_requirement(self, node):
          
  
          if 'name' in node.lattrib:
              name = node.lattrib['name']
          else:
              self.raise_error('<ComponentRequirement> must specify a name')
  
          self.current_component_type.add_component_requirement(ComponentRequirement(name))
docs: Parses <ComponentRequirement>
  
          @param node: Node containing the <ComponentRequirement> element
          @type node: xml.etree.Element