# Compile the abstract runtime class structure
	#
	# Runtime classes have 3 attributes:
	# * `class_name`: the class name as a String
	# * `vft`: the virtual function table for the class (flattened)
	# * `supers`: the super type table (used for type tests)
	fun compile_rtclass(compiler: JavaCompiler) do
		var v = compiler.new_visitor("RTClass.java")
		v.add("import java.util.HashMap;")
		v.add("public abstract class RTClass \{")
		v.add("  public String class_name;")
		v.add("  public HashMap<String, RTMethod> vft = new HashMap<>();")
		v.add("  public HashMap<String, RTClass> supers = new HashMap<>();")
		v.add("  protected RTClass() \{\}")
		v.add("\}")
	end