@Override
    public void mapFunction(String prefix, String localName, Method meth) {
        map.put(prefix + ":" + localName, meth);
    }
Sets a function which can be resolved

@param prefix    the prefix of the function
@param localName the short name of the function
@param meth      method to invoke
core/src/main/java/com/github/dozermapper/core/el/mappers/FunctionsMapper.java