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            | 62 | 
                 *
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            62 | 
                 *
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            | 63 | 
                 * @param \context|null $context Context
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                 * @param \context|null $context Context
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                 * @param int $modifiedfrom Return only records modified after this date
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                 * @param int $modifiedfrom Return only records modified after this date
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                 * @return \moodle_recordset|null Recordset, or null if no possible activities in given context
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                 * @return \moodle_recordset|null Recordset, or null if no possible activities in given context
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            | 66 | 
                 */
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                 */
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            | 67 | 
                public function get_document_recordset($modifiedfrom = 0, \context $context = null) {
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                public function get_document_recordset($modifiedfrom = 0, ?\context $context = null) {
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            | 68 | 
                    global $DB;
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                    global $DB;
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                    list ($contextjoin, $contextparams) = $this->get_context_restriction_sql(
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                    list ($contextjoin, $contextparams) = $this->get_context_restriction_sql(
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                            $context, $this->get_module_name(), 'modtable');
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                            $context, $this->get_module_name(), 'modtable');
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                    if ($contextjoin === null) {
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                    if ($contextjoin === null) {
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                        return null;
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                        return null;
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