Is the config object concept now the same as in Touch?

Is this config object concept is now the same what the Touch has?

Can I or should I do this in Ext 5?

Code:

Ext.define("User", {
    extend: "Ext.data.Model",
    config: {
        fields: [
            {name: "firstName", type: "string"},
            {name: "lastName",  type: "string"},
            {name: "age",       type: "int"},
            {name: "eyeColor",  type: "string"}
        ]
    }
});