How to use the @elastic/eui.keyCodes.ENTER function in @elastic/eui

it(`on ENTER keyup`, () => {
      const e = angular.element.Event('keyup'); // eslint-disable-line new-cap
      e.keyCode = keyCodes.ENTER;
      element.trigger(e);
      sinon.assert.calledOnce(scope.handleClick);
    });

it(`on ENTER keyup`, () => {
      const e = angular.element.Event('keyup'); // eslint-disable-line new-cap
      e.keyCode = keyCodes.ENTER;
      element.trigger(e);
      sinon.assert.calledOnce(scope.handleClick);
    });

onFieldKeyDown = ({ keyCode }) => {
    if (keyCode === keyCodes.ENTER) {
      this.saveEdit();
    }
    if (keyCode === keyCodes.ESCAPE) {
      this.cancelEdit();
    }
  }

onFieldKeyDown = ({ keyCode }) => {
    if (keyCode === keyCodes.ENTER) {
      this.saveEdit();
    }
    if (keyCode === keyCodes.ESCAPE) {
      this.cancelEdit();
    }
  }

newGroupKeyPress = (e) => {
    if (
      e.keyCode === keyCodes.ENTER &&
      this.state.groupsValidationError === '' &&
      this.state.tempNewGroupName !== ''
    ) {
      this.addNewGroup();
    }
  };

onEditFieldKeyDown = ({ keyCode }) => {
    if (keyCodes.ENTER === keyCode) {
      this.props.saveFilter({
        filterId: this.state.editingFilterId,
        newFilterValue: this.state.editingFilterValue,
      });
      this.stopEditingFilter();
    }
    if (keyCodes.ESCAPE === keyCode) {
      this.stopEditingFilter();
    }
  };

$scope.submitEditorWithKeyboard = (event) => {
            if (event.ctrlKey && event.keyCode === keyCodes.ENTER) {
              event.preventDefault();
              event.stopPropagation();
              $scope.stageEditableVis();
            }
          };

this.onKeyDown = (ev) => {
          if (ev.keyCode === keyCodes.ENTER) {
            this.restore();
            return;
          }

          if (ev.keyCode === keyCodes.UP) {
            ev.preventDefault();
            this.selectedIndex--;
          } else if (ev.keyCode === keyCodes.DOWN) {
            ev.preventDefault();
            this.selectedIndex++;
          }

          this.selectedIndex = Math.min(Math.max(0, this.selectedIndex), this.reqs.length - 1);
          this.selectedReq = this.reqs[this.selectedIndex];
          this.viewingReq = this.reqs[this.selectedIndex];
        };

hint.keydown(ev => {
        if (ev.keyCode === keyCodes.ENTER) {
          ev.preventDefault();
          startEditing();
        }
      });

function onKeyDown(event: KeyboardEvent) {
    if (event.keyCode === keyCodes.ENTER) {
      onClose();
    }
  }