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# bson_reader_set_destroy_func()

## Synopsis

    void
    bson_reader_set_destroy_func (bson_reader_t *reader,
                                  bson_reader_destroy_func_t func);

## Parameters

- `reader`: A bson_reader_t.

- `func`: A bson_reader_destroy_func_t.

## Description

Allows for setting a callback to be executed when a reader is destroyed. This should only be used by implementations implementing their own read callbacks.