The AzimuthData class is used to store reference info needed for Azimuth
plotref
DimReduc object containing UMAP for plotting and projection. This should also contain the cell IDs in the misc slot
colormap
Vector of id-color mapping for specifying the plots.
seurat.version
Version of Seurat used in reference construction
azimuth.version
Version of Azimuth used in reference construction
reference.version
Version of the Azimuth reference