Error thrown when calling `rand(d::GaussianLaguerre, dims::Dim2)` method

[apkille]

While writing docstrings for rand methods I found this:

julia> rand(GaussianLaguerre(2, 1.0), (3, 3))
ERROR: UndefVarError: `a` not defined in `RandomMatrices`
Suggestion: check for spelling errors or missing imports.
Stacktrace:
 [1] rand(d::GaussianLaguerre, dims::Tuple{Int64, Int64})
   @ RandomMatrices ~/Documents/Julia Packages/JuliaMatrices/RandomMatrices.jl/src/GaussianEnsembles.jl:180
 [2] top-level scope
   @ REPL[54]:1

Originates from not accessing a from the object d. Tests should be added for this method too as it looks a little suspicious as is: https://github.com/JuliaMath/RandomMatrices.jl/blob/c76044d43e718900e72fe71266955c65a47258b0/src/GaussianEnsembles.jl#L149-L173