how this.toggleProperty("editing") works in ember.js?

code

import Ember from 'ember'; export default Ember.Component.extend({

editing: false,
actions: {
    editTodo() {
        this.toggleProperty("editing");
    },
    submitTodo() {
        const todo = this.get("todo");
        if (todo.get("title") == "") {
            todo.destroyRecord().then(() => {
                this.toggleProperty("editing");
            });
        } else {
            this.toggleProperty("editing");
        }
    },
    deleteTodo() {
        this.get("todo").destroyRecord();
    }
}

});

how this 'editing' property get into action, can anyone please explain? I'm new to ember