+= nextLevel
                def list = []
                if (c instanceof org.codehaus.groovy.tools.groovydoc.SimpleGroovyClassDoc) {
                    list = c.methods().findAll(isVisible).collect { method ->
                        "<a href='${classDoc.relativeRootPath}${c.fullPathName}.html#${nameFromParams(method)}'>${method.name()}</a>"
                    }
                } else {
                    list = c.externalClass().methods.findAll{ isVisibleExt(it) }.collect { method ->
                