public Builder namespaceId(final String namespaceId) {
            this.namespaceId = namespaceId;
            return this;
        }
namespaceId.

@param namespaceId namespaceId
@return SelectorDOBuilder
shenyu-register-center/shenyu-register-common/src/main/java/org/apache/shenyu/register/common/dto/MetaDataRegisterDTO.java