How to use the @ohif/core.MODULE_TYPES.TOOLBAR function in @ohif/core

function _getVisibleToolbarButtons() {
  const toolbarModules = extensionManager.modules[MODULE_TYPES.TOOLBAR];
  const toolbarButtonDefinitions = [];

  toolbarModules.forEach(extension => {
    const { definitions, defaultContext } = extension.module;
    definitions.forEach(definition => {
      const context = definition.context || defaultContext;

      if (this.props.activeContexts.includes(context)) {
        toolbarButtonDefinitions.push(definition);
      }
    });
  });

  return toolbarButtonDefinitions;
}

function _getVisibleToolbarButtons() {
  const toolbarModules = extensionManager.modules[MODULE_TYPES.TOOLBAR];
  const toolbarButtonDefinitions = [];

  toolbarModules.forEach(extension => {
    const { definitions, defaultContext } = extension.module;
    definitions.forEach(definition => {
      const context = definition.context || defaultContext;

      if (this.props.activeContexts.includes(context)) {
        toolbarButtonDefinitions.push(definition);
      }
    });
  });

  return toolbarButtonDefinitions;
}