from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None


app = FastAPI()


@app.post("/items/")
async def create_item(item: Item):
    item_dict = item.dict()
    if item.tax:
        price_with_tax = item.price + item.tax

{
	"id": "0001",
	"type": "donut",
	"name": "Cake",
	"ppu": 0.55,
	"batters":
		{
			"batter":
				[
					{ "id": "1001", "type": "Regular" },
					{ "id": "1002", "type": "Chocolate" },
					{ "id": "1003", "type": "Blueberry" },
					{ "id": "1004", "type": "Devil's Food" }
				]
		},
	"topping":
		[
			{ "id": "5001", "type": "None" },
			{ "id": "5002", "type": "Glazed" },
			{ "id": "5005", "type": "Sugar" },

ECDS NAME                                                     TYPE
istio.io/telemetry/stats/prometheus/sidecar/Inbound/HTTP      
istio.io/telemetry/stats/prometheus/sidecar/Inbound/TCP       
istio.io/telemetry/stats/prometheus/sidecar/Outbound/HTTP     
istio.io/telemetry/stats/prometheus/sidecar/Outbound/TCP      
default.display-metadata                                      envoy.extensions.filters.http.wasm.v3.Wasm

				}
				if ETag.IsEncrypted() {
					SSES3SinglePartObjects[i] = true
					metadata = append(metadata, object.UserDefined)
					buckets = append(buckets, object.Bucket)
					names = append(names, object.Name)
				}
			}
		}

		// If there are no SSE-S3 single-part objects
		// we can skip the decryption process. However,
		// we still have to adjust the size and ETag
		// of SSE-C and SSE-KMS objects.

The parameter `name` is defined as `Optional[str]`, but it is **not optional**, you cannot call the function without the parameter:

```Python
say_hi()  # Oh, no, this throws an error! 😱
```

The `name` parameter is **still required** (not *optional*) because it doesn't have a default value. Still, `name` accepts `None` as the value:

```Python
say_hi(name=None)  # This works, None is valid 🎉
```

import org.codelibs.fess.es.config.exentity.BadWord;
import org.dbflute.Entity;
import org.dbflute.dbmeta.AbstractDBMeta;
import org.dbflute.dbmeta.info.ColumnInfo;
import org.dbflute.dbmeta.info.UniqueInfo;
import org.dbflute.dbmeta.name.TableSqlName;
import org.dbflute.dbmeta.property.PropertyGateway;
import org.dbflute.dbway.DBDef;
import org.dbflute.util.DfTypeUtil;

/**
 * @author ESFlute (using FreeGen)
 */

import org.dbflute.Entity;
import org.dbflute.dbmeta.AbstractDBMeta;
import org.dbflute.dbmeta.info.ColumnInfo;
import org.dbflute.dbmeta.info.UniqueInfo;
import org.dbflute.dbmeta.name.TableSqlName;
import org.dbflute.dbmeta.property.PropertyGateway;
import org.dbflute.dbway.DBDef;
import org.dbflute.util.DfTypeUtil;

/**
 * @author ESFlute (using FreeGen)
 */

                                try {
                                  echo "Checkout ITs from branch: ${ITS_BRANCH}"
                                  checkout([$class: 'GitSCM',
                                          branches: [[name: ITS_BRANCH]],
                                          extensions: [[$class: 'CloneOption', depth: 1, noTags: true, shallow: true]],

        setNumberOfShards(crawlerConfig.getDataShards());
        setNumberOfReplicas(crawlerConfig.getDataReplicas());
    }

    public OpenSearchDataService(final String name, final String type) {
        index = name + "." + type;
    }

    @PostConstruct
    public void init() {
        fesenClient.addOnConnectListener(() -> createMapping("data"));
    }

    @Override

<div class="wrapper">
    <jsp:include page="/WEB-INF/view/common/admin/header.jsp"></jsp:include>
    <jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
        <jsp:param name="menuCategoryType" value="system"/>
        <jsp:param name="menuType" value="dict"/>
    </jsp:include>
    <div class="content-wrapper">
        <div class="content-header">
            <div class="container-fluid">