private boolean isNullable(Parameter parameter) {
        // Any annotation named @Nullable is honored. We're nice that way.
        return Stream.of(parameter.getAnnotations())
            .map(Annotation::annotationType)
            .map(Class::getSimpleName)
            .anyMatch("Nullable"::equals);
    }
Instantiate a ConstructorMapper using the given constructor and prefix

@param <T> the type to map
@param constructor the constructor to be used in mapping
@param prefix      the column name prefix
@return the mapper
core/src/main/java/org/jdbi/v3/core/mapper/reflect/ConstructorMapper.java