pan class="token keyword">val </span><a href="../-not-empty-collection/index.html">NotEmptyCollection</a><span class="token operator">&lt;</span><span class="token operator">*</span><span class="token operator">&gt;</span><span class="token operator">?</span><span class="token punctuation">.</span><a href="../size-or-zero.html">sizeOrZero</a><span class="token operator">: </span><a href="../../kotools.types.number/-positive-int/index.html">PositiveInt</a></div><div class="brief "><p class="paragraph">Return