[insert()](https://github.com/mongodb/mongo-php-driver/blob/46fd9f54be4c735ed7b42b1f31116d8cd4ed92b6/collection.c#L720), [update()](https://github.com/mongodb/mongo-php-driver/blob/46fd9f54be4c735ed7b42b1f31116d8cd4ed92b6/collection.c#L966), and [remove()](https://github.com/mongodb/mongo-php-driver/blob/46fd9f54be4c735ed7b42b1f31116d8cd4ed92b6/collection.c#L1031) do the same thing. Where would a GLE exception be thrown -- within `send_message()`? Without GLE checking, these methods should technically return `false` on failure.