from collections import deque
from copy import copy
from dataclasses import dataclass, is_dataclass
from enum import Enum
from typing import (
    Any,
    Callable,
    Deque,
    Dict,
    FrozenSet,
    List,
    Mapping,
    Sequence,
    Set,
    Tuple,
    Type,
    Union,
)

from fastapi.exceptions import RequestErrorModel
from fastapi.types import IncEx, ModelNameMap, UnionType

                    return firSymbolBuilder.buildSymbol(outerFirClassifier) as? KtDeclarationSymbol
                }

                if (firSymbol.origin == FirDeclarationOrigin.DynamicScope) {
                    // A callable declaration from dynamic scope has no containing declaration as it comes from a dynamic type
                    // which is not based on a specific classifier
                    return null
                }
            }

Die Variable `oauth2_scheme` ist eine Instanz von `OAuth2PasswordBearer`, aber auch ein „Callable“.

Es könnte wie folgt aufgerufen werden:

```Python
oauth2_scheme(some, parameters)
```

Es kann also mit `Depends` verwendet werden.

### Verwendung

                is FirFieldSymbol -> buildFieldSymbol(firSymbol)
                is FirEnumEntrySymbol -> buildEnumEntrySymbol(firSymbol) // TODO enum entry should not be callable
                is FirBackingFieldSymbol -> buildBackingFieldSymbol(firSymbol)
                is FirErrorPropertySymbol -> buildErrorVariableSymbol(firSymbol)

            // Given `fun f(...): R { blockExpression }`, `{ blockExpression }` is mapped to the enclosing anonymous function,
            // which may raise an exception if we attempt to retrieve, e.g., callable declaration from it.
            return null
        }
        if (function.typeReference == null) return null
        return getReturnTypeForKtDeclaration(function).nonErrorTypeOrNull()
    }

package org.gradle.wrapper; public synchronized class GradleWrapperMain { public static void main(String[]); } org/gradle/wrapper/Install$1.class package org.gradle.wrapper; public final synchronized class Install$1 implements java.util.concurrent.Callable { public void Install$1(java.io.File, java.io.File, java.net.URI, Install, WrapperConfiguration); public final Object call(); } org/gradle/wrapper/Install$InstallCheck.class package org.gradle.wrapper; public final synchronized class Install$InstallCheck...

                return (from == null) ? true : null;
              }
            });

    Set<Entry<@Nullable String, @Nullable Boolean>> entries = map.entrySet();
    assertTrue(entries.contains(Maps.immutableEntry("a", true)));
    assertTrue(entries.contains(Maps.<String, @Nullable Boolean>immutableEntry("b", null)));
    assertTrue(

  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> alwaysTrue() {
    return ObjectPredicate.ALWAYS_TRUE.withNarrowedType();
  }

  /** Returns a predicate that always evaluates to {@code false}. */
  @GwtCompatible(serializable = true)
  public static <T extends @Nullable Object> Predicate<T> alwaysFalse() {
    return ObjectPredicate.ALWAYS_FALSE.withNarrowedType();
  }

    }

    @Override
    public @Nullable Entry<K, V> firstEntry() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate().firstEntry();
    }

    @Override
    public @Nullable Entry<K, V> floorEntry(K key) {
      assertTrue(Thread.holdsLock(mutex));
      return delegate().floorEntry(key);
    }

    @Override
    public @Nullable K floorKey(K key) {

import org.checkerframework.checker.nullness.qual.Nullable;

/** Implementations of {@code Futures.transform*}. */
@GwtCompatible
@ElementTypesAreNonnullByDefault
@SuppressWarnings("nullness") // TODO(b/147136275): Remove once our checker understands & and |.
abstract class AbstractTransformFuture<
        I extends @Nullable Object, O extends @Nullable Object, F, T extends @Nullable Object>