NoSuchMethodException on calling method with reflection

I have the following class with a static method, which takes an argument of type Class<? extends FunctionProvider> and generates a FunctionDescriptor.

public class NoInputFunctionDescriptorFactory {

public static FunctionDescriptor getFunctionDescriptorForClass(Class<? extends FunctionProvider> clazz) {
    FunctionDescriptor functionDescriptor = DescriptorFactory.getFactory().createFunctionDescriptor();
    functionDescriptor.setType("class");
    functionDescriptor.setName(clazz.getSimpleName());
    Map conditionArgs = functionDescriptor.getArgs();
    conditionArgs.put("class.name", clazz.getName());
    return functionDescriptor;
}

}

I call this class from a helper method which takes two arguments of type String, the factory class name (e.g. com.example.NoInputFunctionDescriptorFactory) and the class name of a class, extending FunctionProvider (e.g. com.example.CreateIssuesPostFunction). These arguments are read from a yaml model, therefore they are of type String.

 private FunctionDescriptor createFunctionDescriptorFactory(String factoryClassNameString, String functionProviderClassNameString) {
    try {
        Class<? extends FunctionProvider> functionProviderClass = (Class<? extends FunctionProvider>) Class.forName(functionProviderClassNameString);
        Class<?> factoryClass = Class.forName(factoryClassNameString);
        Method method = factoryClass.getMethod("getFunctionDescriptorForClass", FunctionProvider.class);
        return (FunctionDescriptor) method.invoke(null, functionProviderClass);
    } catch (ClassNotFoundException | NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
        return null;
    }
}

When I call the createFunctionDescriptorFactory() method I always end up having a NoSuchMethodException:

java.lang.NoSuchMethodException: com.example.NoInputFunctionDescriptorFactory.getFunctionDescriptorForClass(com.opensymphony.workflow.FunctionProvider)

May someone explain me where I'm wrong?