Node enable/disable[FEATURE]

[georgebudescu]

Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
Possibility to enable/disable some nodes or vertex without recreating again the entire graph. So they can be excluded from the path finders.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
I'm working with a Warehouse map represented as a Graph. Inside i have some machines that are going to use the graph to calculate the paths. At some points some nodes/edges are no more available, simply because physically will crash. I'm trying to undestand how can i enable/disable some nodes and calculate the path excluding the nodes and edges dynamically without creating the graph every time. I have considered to put the double.PositiveInfinity value but it's not a solution in my case because i should get null path if no path is found pysically. Is there any delegate that was designed for this purpose, or some different way to make it happen ?