e::any(), Lock::<a href="#type-lock_type">lock_type()</a>) -&gt; ok | no_return()</tt><br></p>
</div><p>Write.
 Function writes the Value to the Storage with Key and write_locks.
 If there is a Key in Storage it just updates,
 else it adds new #kv{key:=Key,value:=Value} to the Storage.
 The function needs to be wrapped in transaction.
 Returns ok or throws Error.</p>
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