"paragraph">Create an add expression to add the given expression to the current expression</p><span class="kdoc-tag"><h4 class="">Return</h4><p class="paragraph">an add expression.</p></span><h4 class="">Parameters</h4><div class="table"><div class="table-row" data-filterable-current=":couchbase-lite/commonMain" data-filterable-set=":couchbase-lite/commonMain"><div class="main-subrow keyValue "><div class=""><span class="inline-flex"><div><u><span><span>expression</span></span></u></div></span></div><div><d