fun build_resolution_tables(elements: Set[MClassType], map: Map[MClass, Set[MType]]): Map[MClassType, Array[nullable MType]] do
		var tables = new HashMap[MClassType, Array[nullable MType]]
		for mclasstype in elements do
			var mtypes = map[mclasstype.mclass]
			var table = new Array[nullable MType]
			for mtype in mtypes do
				var color = opentype_colors[mtype]
				if table.length <= color then
					for i in [table.length .. color[ do
						table[i] = null
					end
				end
				table[color] = mtype
			end
			tables[mclasstype] = table
		end
		return tables
	end