Patch nodes with the given dict of patches. Note that this consumes
        the input!

def patch_nodes(self, patches):
        """Patch nodes with the given dict of patches. Note that this consumes
        the input!
        """
        # because we don't have any mapping from node _names_ to nodes, and we
        # only have the node name in the patch, we have to iterate over all the
        # nodes looking for matching names. We could use _find_by_name if we
        # were ok with doing an O(n*m) search (one nodes scan per patch)
        for node in self.nodes.values():
            if node.resource_type != NodeType.Model:
                continue
            patch = patches.pop(node.name, None)
            if not patch:
                continue
            node.patch(patch)

        # log debug-level warning about nodes we couldn't find
        if patches:
            for patch in patches.values():
                # since patches aren't nodes, we can't use the existing
                # target_not_found warning
                logger.debug((
                    'WARNING: Found documentation for model "{}" which was '
                    'not found or is disabled').format(patch.name)
                )