if (list.isEmpty()) {
            return OptionalEntity.empty();
        }
        return OptionalEntity.of(list.get(0));
    }

    /**
     * Stores a web configuration.
     * Configuration parameters are encrypted before storage.
     *
     * @param webConfig The web configuration to store
     */
    public void store(final WebConfig webConfig) {

## API Request Parameters

### Token

    }

    /**
     * Converts this access result to XContent format for OpenSearch indexing.
     *
     * @param builder The XContentBuilder to write to.
     * @param params Additional parameters for the conversion.
     * @return The XContentBuilder with the access result data.
     * @throws IOException if the conversion fails.
     */
    @Override

   * @param formal The type whose type variables or itself is mapped to other type(s). It's almost
   *     always a bug if {@code formal} isn't a type variable and contains no type variable. Make
   *     sure you are passing the two parameters in the right order.
   * @param actual The type that the formal type variable(s) are mapped to. It can be or contain yet
   *     other type variables, in which case these type variables will be further resolved if

     * @throws InstantiationRuntimeException
     *             If the underlying constructor represents an abstract class
     * @throws IllegalAccessRuntimeException
     *             If the number of actual and formal parameters differ, if unwrapping of primitive arguments fails,
     *             or if after unwrapping, the parameter values cannot be converted to the corresponding formal parameter types,

/**
 * Pager class for file crawler configuration management.
 * This class provides pagination functionality for file configuration listings
 * and contains form fields for file crawler configuration parameters.
 */
public class FileConfigPager implements Serializable {

    /** Serial version UID for serialization */
    private static final long serialVersionUID = 1L;

    /**

    //                                                                      ==============

    /**
     * Retrieves key match settings with pagination.
     *
     * @param body the search parameters for filtering and pagination
     * @return JSON response containing key match settings list
     */
    // GET /api/admin/keymatch/settings
    // PUT /api/admin/keymatch/settings
    @Execute

        // <li>1: K(i) := PRF( KI, [i]_2 || Label || 0x00 || Context || [L]_2 ) with the counter at the very beginning
        // of the fixedInputData (The default implementation has this format)</li>
        // with the parameters
        // <li>1. KDFCounterParameters(ki, null, "Label || 0x00 || Context || [L]_2]", 8);

        // all fixed inputs go into the suffix:
        // + label

			text, _ := reader.ReadString('\n')
			// convert CRLF to LF
			*keyHex = strings.ReplaceAll(text, "\n", "")
			*keyHex = strings.TrimSpace(*keyHex)
		}
	}

	var inputs []string

	// Parse parameters
	switch {
	case *stdin:
		// Parse 'mc support inspect --json' output
		input := struct {
			File string `json:"file"`
			Key  string `json:"key"`
		}{}
		got, err := io.ReadAll(os.Stdin)

)

type PreparedStmtDB struct {
	Stmts stmt_store.Store
	Mux   *sync.RWMutex
	ConnPool
}

// NewPreparedStmtDB creates and initializes a new instance of PreparedStmtDB.
//
// Parameters:
// - connPool: A connection pool that implements the ConnPool interface, used for managing database connections.
// - maxSize: The maximum number of prepared statements that can be stored in the statement store.