Issues making deterministic spring layout

The documentation mentions a parameter seed for spring_layout which does not exist. In addition, this is also the method that is referenced in the documentation to change spring_layout default parameters.

layout=(args...) -> spring_layout(args...; C=2, seed=1)   #this fails as the method does not accept seed
gplot(g, layout=layout)

There is a method that accepts a graph and a seed, but this one calls spring_layout directly and does not return a function that gplot expects. I tried to do this but it fails

layout=(kws...) -> spring_layout(g, seed=1, kws...)
gplot(g, layout=layout)

Giving error

MethodError: no method matching spring_layout(::Graphs.SimpleGraphs.SimpleGraph{Int64}, ::Graphs.SimpleGraphs.SimpleGraph{Int64}, ::Vector{Float64}; seed::Int64)

Closest candidates are:

spring_layout(::Graphs.AbstractGraph, ::Any, ::Any; C, MAXITER, INITTEMP) got unsupported keyword argument "seed"

@ GraphPlot ~/.julia/packages/GraphPlot/HXIna/src/layout.jl:104

spring_layout(::Graphs.AbstractGraph, !Matched::Integer, ::Any...) got unsupported keyword argument "seed"

@ GraphPlot ~/.julia/packages/GraphPlot/HXIna/src/layout.jl:177

spring_layout(::Graphs.AbstractGraph, ::Any) got unsupported keyword argument "seed"

@ GraphPlot ~/.julia/packages/GraphPlot/HXIna/src/layout.jl:104

It is unclear then how to make spring layout deterministic

Start by reading the spring_layout methods in src/layout.jl at lines 104 and 177, then reproduce the documented gplot examples from the issue. Trace the accepted arguments and keyword handling to determine how the documented usage diverges from the implementation. Done means the documentation and behavior consistently provide a supported way to make spring layouts deterministic.