Adds node if name is available or pre-existing node
        returns True if added
        returns False if not added

def insert_node(self, node):
        """
        Adds node if name is available or pre-existing node
        returns True if added
        returns False if not added
        """
        if self._is_node_reserved(node):
            return False

        # Put node in map
        self._node_map[node.get_id()] = node
        return True