<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_nested_relation_kwargs(field_name, relation_info):
 """ Creating a default instance of a nested serializer """

    kwargs = get_relation_kwargs(field_name, relation_info)
    kwargs.pop('queryset')
    kwargs.pop('required')
    kwargs['read_only'] = True
    return kwargs