Conversion of a DimArray with NoMetadata() to a YAXArray fails

When I try to convert a rasterisation from Rasters.jl to a YAXArray this fails, because YAXArray can't deal with the DimensionalData.Dimensions.LookupArrays.NoMetadata type.
For a MWE see https://github.com/rafaqz/Rasters.jl/issues/337.

When I try to convert the raster file I get the error below, but I can circumvent it when I force a metadata entry like so:

#This works because of the metadata entry.
julia> yaxconvert(YAXArray, DimArray(shpras, metadata=Dict("freqpath"=>freqpath)))

I am not sure, whether it is worth it to fix this when we are switching to DimensionalData.

yaxconvert(YAXArray, DimArray(shpras))
ERROR: MethodError: Cannot `convert` an object of type 
  DimensionalData.Dimensions.LookupArrays.NoMetadata to an object of type 
  Dict{String}
Closest candidates are:
  convert(::Type{T}, ::T) where T<:AbstractDict at abstractdict.jl:559
  convert(::Type{T}, ::AbstractDict) where T<:AbstractDict at abstractdict.jl:561
  convert(::Type, ::GeoInterface.AbstractGeometryTrait, ::Any) at ~/.julia/packages/GeoInterface/J298z/src/fallbacks.jl:112
  ...
Stacktrace:
 [1] YAXArray(axes::Vector{RangeAxis{Float64, S, R} where {S, R<:AbstractVector{Float64}}}, data::Raster{Union{Missing, Int64}, 2, Tuple{X{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, X{Colon}}}, Y{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, Y{Colon}}}}, Tuple{}, Matrix{Union{Missing, Int64}}, Symbol, DimensionalData.Dimensions.LookupArrays.NoMetadata, Missing}, properties::DimensionalData.Dimensions.LookupArrays.NoMetadata, chunks::DiskArrays.GridChunks{2}, cleaner::Vector{YAXArrays.Cubes.CleanMe})
   @ YAXArrays.Cubes ~/.julia/dev/YAXArrays/src/Cubes/Cubes.jl:119
 [2] YAXArray(axes::Vector{RangeAxis{Float64, S, R} where {S, R<:AbstractVector{Float64}}}, data::Raster{Union{Missing, Int64}, 2, Tuple{X{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, X{Colon}}}, Y{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, Y{Colon}}}}, Tuple{}, Matrix{Union{Missing, Int64}}, Symbol, DimensionalData.Dimensions.LookupArrays.NoMetadata, Missing}, properties::DimensionalData.Dimensions.LookupArrays.NoMetadata; cleaner::Vector{YAXArrays.Cubes.CleanMe}, chunks::DiskArrays.GridChunks{2})
   @ YAXArrays.Cubes ~/.julia/dev/YAXArrays/src/Cubes/Cubes.jl:130
 [3] YAXArray(axes::Vector{RangeAxis{Float64, S, R} where {S, R<:AbstractVector{Float64}}}, data::Raster{Union{Missing, Int64}, 2, Tuple{X{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, X{Colon}}}, Y{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, Y{Colon}}}}, Tuple{}, Matrix{Union{Missing, Int64}}, Symbol, DimensionalData.Dimensions.LookupArrays.NoMetadata, Missing}, properties::DimensionalData.Dimensions.LookupArrays.NoMetadata)
   @ YAXArrays.Cubes ~/.julia/dev/YAXArrays/src/Cubes/Cubes.jl:130
 [4] yaxcreate(#unused#::Type{YAXArray}, data::Raster{Union{Missing, Int64}, 2, Tuple{X{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, X{Colon}}}, Y{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, Y{Colon}}}}, Tuple{}, Matrix{Union{Missing, Int64}}, Symbol, DimensionalData.Dimensions.LookupArrays.NoMetadata, Missing}, dimnames::Tuple{Symbol, Symbol}, dimvals::Vector{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing}}, atts::DimensionalData.Dimensions.LookupArrays.NoMetadata)
   @ YAXArrays.Cubes ~/.julia/dev/YAXArrays/src/Cubes/Cubes.jl:322
 [5] yaxconvert(T::Type, x::DimArray{Union{Missing, Int64}, 2, Tuple{X{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, X{Colon}}}, Y{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, Y{Colon}}}}, Tuple{}, Raster{Union{Missing, Int64}, 2, Tuple{X{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, X{Colon}}}, Y{Projected{Float64, StepRangeLen{Float64, Base.TwicePrecision{Float64}, Base.TwicePrecision{Float64}, Int64}, DimensionalData.Dimensions.LookupArrays.ForwardOrdered, DimensionalData.Dimensions.LookupArrays.Regular{Float64}, DimensionalData.Dimensions.LookupArrays.Intervals{DimensionalData.Dimensions.LookupArrays.Start}, DimensionalData.Dimensions.LookupArrays.NoMetadata, Nothing, Nothing, Y{Colon}}}}, Tuple{}, Matrix{Union{Missing, Int64}}, Symbol, DimensionalData.Dimensions.LookupArrays.NoMetadata, Missing}, Symbol, DimensionalData.Dimensions.LookupArrays.NoMetadata})
   @ YAXArrayBase ~/.julia/dev/YAXArrayBase/src/axisarrays/axisinterface.jl:82
 [6] top-level scope
   @ REPL[58]:1

Reproduce the failure with the Rasters.jl MWE and inspect the YAXArrays.Cubes constructors in Cubes.jl at lines 119, 130, and 322, along with yaxconvert in YAXArrayBase's axisinterface.jl at line 82. Trace how NoMetadata is converted to attributes and confirm that a DimArray without metadata can be converted successfully without requiring a dummy metadata entry.