calling methods from react

class todosContainer extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      loading: false,
      todos:  {}
    }
  }
  createNewTodo(data){
    Meteor.call('todo.insert', data, function(err){
      if(err){
        toast(err.message ? err.message : 'error occured')
      }else {
        toast('new todo has ben created');
      }
    });
  }
  updateTodo(data){
    Meteor.call('todo.updateTodo',data, function(err){
      if(err){
        toast(err.message ? err.message : 'error occured')
      }else {
        toast('todo has ben Updated successfully');
      }
    });
  }
  render(){
    return (
      return <div>
           // render todos here
         </div>
    )
  } 

}