{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[21:22] hl[21:22] *}

### Create a Session Dependency

A **`Session`** is what stores the **objects in memory** and keeps track of any changes needed in the data, then it **uses the `engine`** to communicate with the database.

import java.security.MessageDigest;
import java.security.GeneralSecurityException;
import java.util.Random;

import jcifs.smb1.Config;
import jcifs.smb1.util.*;

import java.util.Arrays;

/**
 * This class stores and encrypts NTLM user credentials. The default
 * credentials are retrieved from the <tt>jcifs.smb1.smb1.client.domain</tt>,
 * <tt>jcifs.smb1.smb1.client.username</tt>, and <tt>jcifs.smb1.smb1.client.password</tt>
 * properties.

  }

  @Override
  public boolean containsValue(@CheckForNull Object value) {
    return values().contains(value);
  }

  // Modification Operations

  /**
   * Stores a key-value pair in the multimap.
   *
   * @param key key to store in the multimap
   * @param value value to store in the multimap
   * @return {@code true} always
   */
  @CanIgnoreReturnValue
  @Override

    this.elements = null;
    incrementModCount();
    return newDelegate;
  }

  @VisibleForTesting
  boolean isUsingHashFloodingResistance() {
    return delegateOrNull() != null;
  }

  /** Stores the hash table mask as the number of bits needed to represent an index. */
  private void setHashTableMask(int mask) {
    int hashTableBits = Integer.SIZE - Integer.numberOfLeadingZeros(mask);
    metadata =

 *
 * <p>This implementation is based on the <a
 * href="http://portal.acm.org/citation.cfm?id=6621">min-max heap</a> developed by Atkinson, et al.
 * Unlike many other double-ended priority queues, it stores elements in a single array, as compact
 * as the traditional heap data structure used in {@link PriorityQueue}.
 *
 * <p>This class is not thread-safe, and does not accept null elements.
 *
 * <p><i>Performance notes:</i>

  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;

  // Items is the list of Deployments.
  repeated Deployment items = 2;
}

// DEPRECATED.
// DeploymentRollback stores the information required to rollback a deployment.
message DeploymentRollback {
  // Required: This must match the Name of a deployment.
  optional string name = 1;

  // The annotations to be updated to a deployment

  // If all drivers in the list are uninstalled, this can become empty.
  // +patchMergeKey=name
  // +patchStrategy=merge
  repeated CSINodeDriver drivers = 1;
}

// CSIStorageCapacity stores the result of one CSI GetCapacity call.
// For a given StorageClass, this describes the available capacity in a
// particular topology segment.  This can be used when considering where to
// instantiate new PersistentVolumes.

	Devmajor int64 // Major device number (valid for TypeChar or TypeBlock)
	Devminor int64 // Minor device number (valid for TypeChar or TypeBlock)

	// Xattrs stores extended attributes as PAX records under the
	// "SCHILY.xattr." namespace.
	//
	// The following are semantically equivalent:
	//  h.Xattrs[key] = value
	//  h.PAXRecords["SCHILY.xattr."+key] = value
	//

  // If all drivers in the list are uninstalled, this can become empty.
  // +patchMergeKey=name
  // +patchStrategy=merge
  repeated CSINodeDriver drivers = 1;
}

// CSIStorageCapacity stores the result of one CSI GetCapacity call.
// For a given StorageClass, this describes the available capacity in a
// particular topology segment.  This can be used when considering where to
// instantiate new PersistentVolumes.

		if b.Available() == 0 {
			err = b.Flush()
		} else {
			err = nil
		}
	}
	return n, err
}

// buffered input and output

// ReadWriter stores pointers to a [Reader] and a [Writer].
// It implements [io.ReadWriter].
type ReadWriter struct {
	*Reader
	*Writer
}

// NewReadWriter allocates a new [ReadWriter] that dispatches to r and w.