Constructor, specifies getters for named and unnamed fields.
If the i-th object field is not named and the i-th instance element in get_indexed_fields is not null, it will be invoked with that field.
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list of getters for named fields, associated with field names
list of getters for fields without name, may contain null elements to ignore fields.
See Implementation
Constructor, specifies getters for named and unnamed fields.
If the i-th object field is not named and the i-th instance element in get_indexed_fields is not null, it will be invoked with that field.