docs: def acquire(self, resources, prop_name):
          """ Starting with self, walk until you find prop or None """
  
          # Instance
          custom_prop = getattr(self.props, prop_name, None)
          if custom_prop:
              return custom_prop
  
          # Parents...can't use acquire as have to keep going on acquireds
          for parent in self.parents(resources):
              acquireds = parent.props.acquireds
              if acquireds:
                  # First try in the per-type acquireds
                  rtype_acquireds = acquireds.get(self.rtype)
                  if rtype_acquireds:
                      prop_acquired = rtype_acquireds.get(prop_name)
                      if prop_acquired:
                          return prop_acquired
  
                  # Next in the "all" section of acquireds
                  all_acquireds = acquireds.get('all')
                  if all_acquireds:
                      prop_acquired = all_acquireds.get(prop_name)
                      if prop_acquired:
                          return prop_acquired
  
          return