How to use the @wordpress/keycodes.isKeyboardEvent.primary function in @wordpress/keycodes

this.verticalRect = null;
		} else if ( ! this.verticalRect ) {
			this.verticalRect = computeCaretRect();
		}

		// This logic inside this condition needs to be checked before
		// the check for event.nativeEvent.defaultPrevented.
		// The logic handles meta+a keypress and this event is default prevented
		// by RichText.
		if ( ! isNav ) {
			// Set immediately before the meta+a combination can be pressed.
			if ( isKeyboardEvent.primary( event ) ) {
				this.isEntirelySelected = isEntirelySelected( target );
			}

			if ( isKeyboardEvent.primary( event, 'a' ) ) {
				// When the target is contentEditable, selection will already
				// have been set by the browser earlier in this call stack. We
				// need check the previous result, otherwise all blocks will be
				// selected right away.
				if ( target.isContentEditable ? this.isEntirelySelected : isEntirelySelected( target ) ) {
					onMultiSelect( first( blocks ), last( blocks ) );
					event.preventDefault();
				}

				// After pressing primary + A we can assume isEntirelySelected is true.
				// Calling right away isEntirelySelected after primary + A may still return false on some browsers.
				this.isEntirelySelected = true;
			}

			return;
		}

// presses. It may not always be possible to restore the exact same
		// position (such as at an empty line), so it wouldn't be good to
		// compute the position right before any vertical arrow key press.
		if ( ! isVertical ) {
			this.verticalRect = null;
		} else if ( ! this.verticalRect ) {
			this.verticalRect = computeCaretRect();
		}

		// This logic inside this condition needs to be checked before
		// the check for event.nativeEvent.defaultPrevented.
		// The logic handles meta+a keypress and this event is default prevented
		// by RichText.
		if ( ! isNav ) {
			// Set immediately before the meta+a combination can be pressed.
			if ( isKeyboardEvent.primary( event ) ) {
				this.isEntirelySelected = isEntirelySelected( target );
			}

			if ( isKeyboardEvent.primary( event, 'a' ) ) {
				// When the target is contentEditable, selection will already
				// have been set by the browser earlier in this call stack. We
				// need check the previous result, otherwise all blocks will be
				// selected right away.
				if ( target.isContentEditable ? this.isEntirelySelected : isEntirelySelected( target ) ) {
					onMultiSelect( first( blocks ), last( blocks ) );
					event.preventDefault();
				}

				// After pressing primary + A we can assume isEntirelySelected is true.
				// Calling right away isEntirelySelected after primary + A may still return false on some browsers.
				this.isEntirelySelected = true;