### Input Model in Docs { #input-model-in-docs }

You can confirm that in the docs, the `description` field doesn't have a **red asterisk**, it's not marked as required:

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image01.png">
</div>

### Model for Output { #model-for-output }

But if you use the same model as an output, like here:

        assertEquals('A', stream.read());
        assertEquals('B', stream.read());

        // Mark current position
        stream.mark(10);

        assertEquals('C', stream.read());
        assertEquals('D', stream.read());

        // Reset to marked position
        stream.reset();

        // Should read from marked position again
        assertEquals('C', stream.read());
        assertEquals('D', stream.read());

            logging.info(f"Already approved or closed PR #{pr.number}")
            if already_done_comment:
                logging.info(
                    f"This PR #{pr.number} was already marked as done in comment: {already_done_comment.url}"
                )
            elif already_notified_comment:
                updated_comment = update_comment(
                    settings=settings,

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package target

import (
	"sync"
	"sync/atomic"
)

// Inspired from Golang sync.Once but it is only marked
// initialized when the provided function returns nil.

type lazyInit struct {
	done uint32
	m    sync.Mutex
}

func (l *lazyInit) Do(f func() error) error {
	if atomic.LoadUint32(&l.done) == 0 {

  ) {}

  /**
   * Invoked when a call no longer uses a connection.
   */
  open fun connectionReleased(
    connection: Connection,
    call: Call,
  ) {}

  /**
   * Invoked when a connection is marked for no new exchanges.
   */
  open fun noNewExchanges(connection: Connection) {}

  companion object {
    val NONE: ConnectionListener = object : ConnectionListener() {}
  }

package once

import (
	"context"
	"sync"
	"sync/atomic"
)

// Inspired from Golang sync.Once but it is only marked
// initialized when the provided function returns nil.

// Init represents the structure.
type Init struct {
	done uint32
	m    sync.Mutex
}

// Do is similar to sync.Once.Do - makes one successful
// call to the function. ie, it invokes the function
// if it is not successful yet.

-   [guava-discuss: For open-ended questions and discussion](https://groups.google.com/group/guava-discuss)

## IMPORTANT WARNINGS

1. APIs marked with the `@Beta` annotation at the class or method level
are subject to change. They can be modified in any way, or even
removed, at any time. If your code is a library itself (i.e. it is

 public:
  AbstractContextKind getKind() const { return kind_; }

  // Release any underlying resources, including the interface object.
  //
  // WARNING: The destructor of this class is marked as protected to disallow
  // clients from directly destroying this object since it may manage its own
  // lifetime through ref counting. Thus clients MUST call Release() in order to
  // destroy an instance of this class.

            // This is acceptable - not all JVM implementations support destroying SecretKey
            // The important part is that the storage is marked as destroyed
        }

        assertTrue(storage.isDestroyed(), "Storage should be marked as destroyed");

        // Operations should fail after destroy
        assertThrows(IllegalStateException.class, () -> {

        }
    }

    @Test
    fun `should not fail if some method was upgraded and not removed but marked as kept`() {
        checkBinaryCompatible(
            v1 = {
                withJavaFile(
                    "java/com/example/Task.java",
                    """
                        package com.example;