How to call reflection methods in freemarker template?

We can iterate over class fields, annotations with some code like this in java:

Class<?> clazz;
for(Field field : clazz.getDeclaredFields()) {
    for(Annotation annotation : field.getDeclaredAnnotations()) {
        for(Method method : annotation.annotationType().getMethods()) {
            if(method.getName().equals("nullable")) {
                try {
                    // note this line
                    System.out.println(method.invoke(annotation, (Object[])null) );
                }
                catch(Exception e) {
                    System.out.println("Ex");
                }
            }
        }
    }
}

above codes want to check that if one of annotations of fields have nullable method, log it's value. assume this field some class:

public class someClass {
    @Column(nullable = false)
    private Long number;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "entity_id", nullable = true)
    private Entity entity;
}

That above code for this class logs false, then true as a value of nullable attribute in field annotations. Now i want to iterate over class fields and annotations in freemarker template, but the problem is that i cant call method.invoke(annotation, (Object[])null).

<#list fields as field>
    <#list field.annotations as annotation>
        <#if annotation??>
            <#if annotation.annotationType().getSimpleName() == "Column" || annotation.annotationType().getSimpleName() == "JoinColumn">
                <#list annotation.annotationType().getMethods() as annotationMethod>
                    <#attempt>
                        <#if annotationMethod.getName() == "nullable">
                            // this line get error 
                            ${annotationMethod.invoke(annotation, (Object[])null)}
                        </#if>
                        <#recover>
                    </#attempt>
                </#list>
                <#break>
            </#if>
        </#if>
    </#list>
</#list>

Is there another way to achieve this goal in freemarker template? I want to use these code for code generator.