public Builder setCreationDate(long value) {

            creationDate_ = value;
            bitField0_ |= 0x00000002;
            onChanged();
            return this;
        }
<code>optional int64 creation_date = 2;</code>

@param value The creationDate to set.
@return This builder for chaining.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/group/GroupJoinRequest.java