public Builder clearAccessToken() {
            accessToken_ = getDefaultInstance().getAccessToken();
            bitField0_ &= ~0x00000010;
            onChanged();
            return this;
        }
<code>optional string access_token = 5;</code>

@return This builder for chaining.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/conference/Meeting.java