src/PostgresDocumentStore.php
public function upsertDoc(string $collectionName, string $docId, array $docOrSubset): void
    {
        $doc = $this->getDoc($collectionName, $docId);

        if($doc) {
            $this->updateDoc($collectionName, $docId, $docOrSubset);
        } else {
            $this->addDoc($collectionName, $docId, $docOrSubset);
        }
    }
public function upsertDoc(string $collectionName, string $docId, array $docOrSubset): void
    {
        $doc = $this->getDoc($collectionName, $docId);

        if($doc) {
            $this->updateDoc($collectionName, $docId, $docOrSubset);
        } else {
            $this->addDoc($collectionName, $docId, $docOrSubset);
        }
    }
Same as updateDoc except that doc is added to collection if it does not exist.

@param string $collectionName
@param string $docId
@param array $docOrSubset
@throws \Throwable if insert/update did not succeed