3 (metacopy:defcopy-methods basic-vertex
6 (metacopy:defcopy-methods basic-edge
7 :set (edge-id tag color graph)
10 (metacopy:defcopy-methods weighted-edge-mixin
13 (metacopy:defcopy-methods basic-graph
16 (metacopy:defcopy-methods graph-container-vertex
19 (metacopy:defcopy-methods graph-container-edge