resentation. This often leads to a lot of nice refactors in your update and view code!
-->
<p>&#x30DD;&#x30A4;&#x30F3;&#x30C8;&#x306F;&#x3001;&#x3069;&#x3053;&#x304B;&#x3067;<code>Maybe</code>&#x3092;&#x4F7F;&#x3063;&#x3066;&#x3044;&#x308B;&#x306E;&#x3092;&#x898B;&#x3064;&#x3051;&#x305F;&#x3089;&#x3001;&#x3088;&#x308A;&#x6B63;&#x78BA;&#x306A;&#x8868;&#x73FE;&#x3092;&#x898B;&#x3064;&#x3051;&#x3089;&#x308C;&#x308B;&#x304B;&#x3069;&#x3046;&#x304B;&#x307F;&#x308B;&#x305F;&#x3081;&#x306B;<code>type</code>&#x3068