if err != nil {
		return nil, err
	}

	// returns the certificate expiration info
	return newExpirationInfo(name, cert, externallyManaged), nil
}

// CAExists returns true if a certificate authority exists.
func (rm *Manager) CAExists(name string) (bool, error) {
	handler, ok := rm.cas[name]
	if !ok {
		return false, errors.Errorf("%s is not a known certificate", name)
	}

	return handler.readwriter.Exists()

				break outer
			}
			lastFuncID = sf.funcID
		}
	}
	return n
}

// startPCForTrace returns the start PC of a goroutine for tracing purposes.
// If pc is a wrapper, it returns the PC of the wrapped function. Otherwise it
// returns pc.
func startPCForTrace(pc uintptr) uintptr {
	f := findfunc(pc)
	if !f.valid() {
		return pc // may happen for locked g in extra M since its pc is 0.
	}

// inputs to module_op that have already been added to the XlaBuilder. returns
// are the returned XlaOps.
ABSL_DEPRECATED("Use v2/legalize_tf.h::LegalizeMlirToHlo instead.")
Status BuildHloFromTf(mlir::ModuleOp module_op, xla::XlaBuilder& builder,
                      llvm::ArrayRef<xla::XlaOp> xla_params,
                      std::vector<xla::XlaOp>& returns,
                      llvm::ArrayRef<TensorOrResourceShape> arg_shapes,

```

### `HTMLResponse`

Takes some text or bytes and returns an HTML response, as you read above.

### `PlainTextResponse`

Takes some text or bytes and returns an plain text response.

```Python hl_lines="2  7  9"
{!../../../docs_src/custom_response/tutorial005.py!}
```

### `JSONResponse`

Takes some data and returns an `application/json` encoded response.

}

// Finds op that created a given value. If the value is a BlockArgument, this
// returns the owner of the Block.
Operation* GetOpOfValue(Value value) {
  if (auto block_arg = mlir::dyn_cast<BlockArgument>(value))
    return block_arg.getOwner()->getParentOp();

  return value.getDefiningOp();
}

// Checks if `op` is nested in `block`.
bool OpInBlock(Operation* op, Block* block) {

	scStr := string(b)
	if scStr == "" {
		return nil
	}
	s, err := parseStorageClass(scStr)
	if err != nil {
		return err
	}
	sc.Parity = s.Parity
	return nil
}

// MarshalText - marshals storage class string.
func (sc *StorageClass) MarshalText() ([]byte, error) {
	if sc.Parity != 0 {
		return []byte(fmt.Sprintf("%s:%d", schemePrefix, sc.Parity)), nil
	}
	return []byte{}, nil
}

	if r == nil || other == nil {
		return r == other
	}
	var o RemoteErr
	if errors.As(other, &o) {
		return r == &o
	}
	return false
}

// IsRemoteErr returns the value if the error is a RemoteErr.
func IsRemoteErr(err error) *RemoteErr {
	var r RemoteErr
	if errors.As(err, &r) {
		return &r
	}
	return nil
}

type (

   * Reserves next ticket and returns the wait time that the caller must wait for.
   *
   * @return the required wait time, never negative
   */
  final long reserveAndGetWaitLength(int permits, long nowMicros) {
    long momentAvailable = reserveEarliestAvailable(permits, nowMicros);
    return max(momentAvailable - nowMicros, 0);
  }

  /**
   * Returns the earliest time that permits are available (with one caveat).
   *

	case IntType.TypeName():
		return IntType
	case NullType.TypeName():
		return NullType
	case StringType.TypeName():
		return StringType
	case TimestampType.TypeName():
		return TimestampType
	case UintType.TypeName():
		return UintType
	case ListType.TypeName():
		return ListType
	case MapType.TypeName():
		return MapType
	default:
		return nil
	}
}

var (

  auto result = func.walk([&](Operation* op) {
    if (!IsCommunicationOp(op)) return WalkResult::advance();
    has_communication_ops = true;
    if (failed(
            GetControlFlowAncestors(op, control_flow_ops, control_flow_blocks)))
      return WalkResult::interrupt();
    return WalkResult::advance();
  });
  return failure(result.wasInterrupted());
}