Bug #122967 for Graph-Maker: suggest make_graph() for subclass use

As an idea for a feature, it could be good if Graph::Maker had some common func which subclasses could use to create their graph, grabbing the graph_maker parameter if present. It'd be only a few lines, but all subclasses would use it. Perhaps something like below. Could put other common parameters there in the future, though the only such I thought of would be perhaps graph_class=>'My::Graph::Class' to specify a different graph class by name, rather than constructor subr. # Usage: $graph = $self->make_graph(key=>value,...) # This method is intended for use by subclasses. # Create and return a graph with given key/value parameters. # Parameter graph_maker is used (and removed) if given, or Graph.pm otherwise. sub make_graph { my ($self, %params) = @_; my $graph_maker = delete($params{'graph_maker'}) || \&_default_graph_maker; return $graph_maker->(%params); } sub _default_graph_maker { require Graph; return Graph->new(@_); }