lib/Search/Elasticsearch/Client/7_0/Scroll.pm [85:109]:
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sub refill_buffer {
#===================================
    my $self = shift;

    return 0 if $self->is_finished;

    my $buffer    = $self->_buffer;
    my $scroll_id = $self->_scroll_id
        || return 0 + @$buffer;

    my $results = $self->scroll_request;

    my $hits = $results->{hits}{hits};
    $self->_set_total_took( $self->total_took + $results->{took} );

    if ( @$hits == 0 ) {
        $self->_clear_scroll_id;
    }
    else {
        $self->_set__scroll_id( $results->{_scroll_id} );
        push @$buffer, @$hits;
    }
    $self->finish if @$buffer == 0;
    return 0 + @$buffer;
}
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lib/Search/Elasticsearch/Client/8_0/Scroll.pm [85:109]:
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sub refill_buffer {
#===================================
    my $self = shift;

    return 0 if $self->is_finished;

    my $buffer    = $self->_buffer;
    my $scroll_id = $self->_scroll_id
        || return 0 + @$buffer;

    my $results = $self->scroll_request;

    my $hits = $results->{hits}{hits};
    $self->_set_total_took( $self->total_took + $results->{took} );

    if ( @$hits == 0 ) {
        $self->_clear_scroll_id;
    }
    else {
        $self->_set__scroll_id( $results->{_scroll_id} );
        push @$buffer, @$hits;
    }
    $self->finish if @$buffer == 0;
    return 0 + @$buffer;
}
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