Add new edges to the graph. These may be provided either singly, by passing an individual (tail, head) pair, or en masse by passing an array whose entries are [tail1, head1, tail2, head2, ...]. Duplicate edges are permitted.
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Add new edges to the graph. These may be provided either singly, by passing an individual (tail, head) pair, or en masse by passing an array whose entries are [tail1, head1, tail2, head2, ...]. Duplicate edges are permitted.