hasconditioned / getconditioned Gibbs likely wrong

[penelopeysm]

Turing.jl/src/mcmc/gibbs.jl

Lines 104 to 124 in 05110bd

	# has and get
	function has_conditioned_gibbs(context::GibbsContext, vn::VarName)
	return DynamicPPL.haskey(get_global_varinfo(context), vn)
	end
	function has_conditioned_gibbs(context::GibbsContext, vns::AbstractArray{<:VarName})
	num_conditioned = count(Iterators.map(Base.Fix1(has_conditioned_gibbs, context), vns))
	if (num_conditioned != 0) && (num_conditioned != length(vns))
	error(
	"Some but not all of the variables in `vns` have been conditioned on. " *
	"Having mixed conditioning like this is not supported in GibbsContext.",
	)
	end
	return num_conditioned > 0
	end
	function get_conditioned_gibbs(context::GibbsContext, vn::VarName)
	return get_global_varinfo(context)[vn]
	end
	function get_conditioned_gibbs(context::GibbsContext, vns::AbstractArray{<:VarName})
	return map(Base.Fix1(get_conditioned_gibbs, context), vns)
	end

Following #2535 this is probably wrong and should be checked

[penelopeysm]

Oooh, actually it's not wrong!