package org.jtwig.functions.impl.string; import org.jtwig.functions.FunctionRequest; import org.jtwig.functions.SimpleJtwigFunction; public class LowerFunction extends SimpleJtwigFunction { @Override public String name() { return "lower"; } @Override public Object execute(FunctionRequest request) { request.minimumNumberOfArguments(1).maximumNumberOfArguments(1); String input = request.getEnvironment().getValueEnvironment().getStringConverter().convert(request.get(0)); return input.toLowerCase(); } }