prop.name == 'a'
        prop.additionalValues.size() == 3
        format(prop.additionalValues[0].title) == 'inherited'
        format(prop.additionalValues[0].value) == 'specific1'
        format(prop.additionalValues[1].title) == 'overridden'
        format(prop.additionalValues[1].value) == 'specific3'
        format(prop.additionalValues[2].title) == 'added'

    }

    PropertyDoc forClass(ClassDoc referringClass) {
        return forClass(referringClass, [])
    }

    PropertyDoc forClass(ClassDoc referringClass, Collection<ExtraAttributeDoc> additionalValues) {
        def refererMetaData = referringClass.classMetaData
        if (refererMetaData == this.referringClass && additionalValues.isEmpty()) {
            return this
        }

                        additionalValues.put(newAttribute.getKey(), newAttribute);
                    } else {
                        additionalValues.put(key, attributeDoc);
                    }
                }

                props.put(propertyDoc.getName(), propertyDoc.forClass(classDoc, additionalValues.values()));
            }
        }

        return property
    }

    def propertyDoc(Map<String, ?> args = [:], String name) {
        return new PropertyDoc(classMetaData(), property(name, null), [parse("<para>$name comment</para>")], args.additionalValues ?: [])
    }

    def method(String name, ClassMetaData classMetaData) {
        return method([:], name, classMetaData)
    }

        return property
    }

    def propertyDoc(Map<String, ?> args = [:], String name) {
        return new PropertyDoc(classMetaData(), property(name, null), [parse("<para>$name comment</para>")], args.additionalValues ?: [])
    }

    def method(String name, ClassMetaData classMetaData) {
        return method([:], name, classMetaData)
    }

        _ * propDoc.metaData >> propMetaData
        _ * propDoc.deprecated >> (args.deprecated ?: false)
        _ * propDoc.incubating >> (args.incubating ?: false)
        _ * propDoc.additionalValues >> (args.attributes ?: [])
        _ * propMetaData.type >> new TypeMetaData(args.type ?: 'SomeType')
        _ * propMetaData.readable >> (args.containsKey('readable') ? args.readable : true)