return sourceLevel;
        }
                ]]>
          </code>
        </codeSegment>
      </codeSegments>
    </class>
    <class rootElement="true" xml.tagName="toolchains" xsd.compositor="sequence">
      <name>PersistedToolchains</name>
      <superClass>TrackableBase</superClass>
      <description>
        The {@code &lt;toolchains&gt;} element is the root of the descriptor.

// are equal. The signatures are expected to be base64 encoded strings
// according to the AWS S3 signature V2 spec.
func compareSignatureV2(sig1, sig2 string) bool {
	// Decode signature string to binary byte-sequence representation is required
	// as Base64 encoding of a value is not unique:
	// For example "aGVsbG8=" and "aGVsbG8=\r" will result in the same byte slice.
	signature1, err := base64.StdEncoding.DecodeString(sig1)

from copy import copy, deepcopy
from dataclasses import dataclass
from typing import (
    Any,
    Callable,
    Coroutine,
    Dict,
    ForwardRef,
    List,
    Mapping,
    Optional,
    Sequence,
    Tuple,
    Type,
    Union,
    cast,
)

import anyio
from fastapi import params
from fastapi._compat import (
    PYDANTIC_V2,
    ErrorWrapper,
    ModelField,
    RequiredParam,

  // currentRevision, if not empty, indicates the version of the StatefulSet used to generate Pods in the
  // sequence [0,currentReplicas).
  optional string currentRevision = 6;

  // updateRevision, if not empty, indicates the version of the StatefulSet used to generate Pods in the sequence
  // [replicas-updatedReplicas,replicas)
  optional string updateRevision = 7;

  }

  private enum MyOrder {
    FIRST,
    SECOND,
    THIRD;
  }

  private enum OtherOrder {
    FIRST,
    SECOND,
    THIRD;
  }

  // Given a sequence of lock acquisition descriptions
  // (e.g. "LockA -> LockB", "LockB -> LockC", ...)
  // Checks that the exception.getMessage() matches a regex of the form:
  // "LockA -> LockB \b.*\b LockB -> LockC \b.*\b LockC -> LockA"

  }

  private enum MyOrder {
    FIRST,
    SECOND,
    THIRD;
  }

  private enum OtherOrder {
    FIRST,
    SECOND,
    THIRD;
  }

  // Given a sequence of lock acquisition descriptions
  // (e.g. "LockA -> LockB", "LockB -> LockC", ...)
  // Checks that the exception.getMessage() matches a regex of the form:
  // "LockA -> LockB \b.*\b LockB -> LockC \b.*\b LockC -> LockA"

  // currentRevision, if not empty, indicates the version of the StatefulSet used to generate Pods in the
  // sequence [0,currentReplicas).
  optional string currentRevision = 6;

  // updateRevision, if not empty, indicates the version of the StatefulSet used to generate Pods in the sequence
  // [replicas-updatedReplicas,replicas)
  optional string updateRevision = 7;

 *    they've confirmed that the owner of the private key is also the owner of the certificate's
 *    other properties.
 *
 * Certificates are signed by other certificates and a sequence of them is called a certificate
 * chain. The chain terminates in a self-signed "root" certificate. Signing certificates in the
 * middle of the chain are called "intermediates". Organizations that offer certificate signing are

  /**
   * Read/write persistence of the upstream source and its metadata. Its layout is as follows:
   *
   *  * 16 bytes: either `OkHttp cache v1\n` if the persisted file is complete. This is another
   *    sequence of bytes if the file is incomplete and should not be used.
   *  * 8 bytes: *n*: upstream data size
   *  * 8 bytes: *m*: metadata size
   *  * *n* bytes: upstream data
   *  * *m* bytes: metadata
   *

```Python hl_lines="7"
{!> ../../docs_src/query_params_str_validations/tutorial003_py310.py!}
```

////

## 🚮 🥔 🧬

👆 💪 🔬 <abbr title="A regular expression, regex or regexp is a sequence of characters that define a search pattern for strings.">🥔 🧬</abbr> 👈 🔢 🔜 🏏:

//// tab | 🐍 3️⃣.6️⃣ &amp; 🔛

```Python hl_lines="11"
{!> ../../docs_src/query_params_str_validations/tutorial004.py!}
```