private void setReason(java.lang.String value) {
        java.lang.Class<?> valueClass = value.getClass();
        bitField0_ |= 0x00000010;
        reason_ = value;
    }
<code>optional string reason = 5;</code>

@param value The reason to set.
turms-client-kotlin/src/main/java/im/turms/client/model/proto/model/user/UserFriendRequest.java