import org.dbflute.cbean.ConditionBean;
import org.dbflute.cbean.result.ListResultBean;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.exception.IllegalBehaviorStateException;
import org.dbflute.optional.OptionalEntity;
import org.dbflute.util.DfTypeUtil;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.delete.DeleteRequestBuilder;
import org.opensearch.action.index.IndexRequestBuilder;

```Python hl_lines="9  14"
from typing import Optional

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
async def read_item(item_id: int, q: Optional[str] = None):
    return {"item_id": item_id, "q": q}
```

**توجه**:

import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.bhv.readable.EntityRowHandler;
import org.dbflute.cbean.result.ListResultBean;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.optional.OptionalEntity;

import com.orangesignal.csv.CsvConfig;
import com.orangesignal.csv.CsvReader;
import com.orangesignal.csv.CsvWriter;

import jakarta.annotation.Resource;

/**

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.Function;
import com.google.common.base.Optional;
import com.google.common.base.Predicate;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableListMultimap;
import com.google.common.collect.ImmutableMultimap;

	"gopkg.in/yaml.v3"
)

// expire: # Expire objects that match a condition
//   apiVersion: v1
//   bucket: mybucket # Bucket where this batch job will expire matching objects from
//   prefix: myprefix # (Optional) Prefix under which this job will expire objects matching the rules below.
//   rules:
//     - type: object  # regular objects with zero or more older versions

        assertThrows(jcifs.CIFSException.class, () -> transport.getDfsReferrals(ctx, nullName, "h", "d", 1));
        verify(transport).getDfsReferrals(eq(ctx), isNull(), eq("h"), eq("d"), eq(1));
    }

    // Signing modes: optional vs enforced
    @Test
    @DisplayName("isSigningOptional and isSigningEnforced reflect configuration")
    void signingModes() throws Exception {
        when(transport.isSigningOptional()).thenReturn(true);

 */
package org.codelibs.fess.util;

import java.io.File;
import java.io.FilenameFilter;
import java.nio.file.Path;

import org.codelibs.fess.unit.UnitFessTestCase;
import org.dbflute.optional.OptionalEntity;

public class ResourceUtilTest extends UnitFessTestCase {
    public void test_resolve() {
        String value;

        value = null;
        assertNull(ResourceUtil.resolve(value));

You can define arbitrarily deeply nested models:

{* ../../docs_src/body_nested_models/tutorial007_py310.py hl[7,12,18,21,25] *}

/// info

Notice how `Offer` has a list of `Item`s, which in turn have an optional list of `Image`s

///

## Bodies of pure lists { #bodies-of-pure-lists }

import org.dbflute.cbean.ConditionBean;
import org.dbflute.cbean.result.ListResultBean;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.exception.IllegalBehaviorStateException;
import org.dbflute.optional.OptionalEntity;
import org.dbflute.util.DfTypeUtil;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.delete.DeleteRequestBuilder;
import org.opensearch.action.index.IndexRequestBuilder;

import jakarta.servlet.http.HttpServletRequest;

import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.path.ActionPathResolver;
import org.lastaflute.web.ruts.process.ActionRuntime;
import org.lastaflute.web.servlet.request.RequestManager;