def init_property_classifiers
      @local_std_prop_hash = {}
      @alias_std_prop_map = append_ancestor_enum(@local_std_prop_hash) { |par| par.alias_standard_attribute_hash }
      @local_prop_hash = {}
      @prop_hash = append_ancestor_enum(@local_prop_hash) { |par| par.property_hash }
      @attributes = Enumerable::Enumerator.new(@prop_hash, :each_key)
      @local_mndty_attrs = Set.new
      @local_defaults = {}
      @defaults = append_ancestor_enum(@local_defaults) { |par| par.defaults }
    end
def init_property_classifiers
      @local_std_prop_hash = {}
      @alias_std_prop_map = append_ancestor_enum(@local_std_prop_hash) { |par| par.alias_standard_attribute_hash }
      @local_prop_hash = {}
      @prop_hash = append_ancestor_enum(@local_prop_hash) { |par| par.property_hash }
      @attributes = Enumerable::Enumerator.new(@prop_hash, :each_key)
      @local_mndty_attrs = Set.new
      @local_defaults = {}
      @defaults = append_ancestor_enum(@local_defaults) { |par| par.defaults }
    end
Initializes the property meta-data structures.