public Builder clearRole() {
            bitField0_ &= ~0x00000008;
            role_ = 0;
            onChanged();
            return this;
        }
<code>optional .im.turms.proto.GroupMemberRole role = 4;</code>

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