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

@param namespaceId namespaceId
@return RuleDOBuilder
shenyu-admin/src/main/java/org/apache/shenyu/admin/model/entity/RuleDO.java