code: function(field, def) {
          var ret;
          if (field in this.__dirtyValues__) {
              ret = this.__dirtyValues__[field];
          } else if (field in this.__values__) {
              ret = this.__values__[field];
          } else if (CRUD.EntityManager.entities[this.getType()].fields.indexOf(field) > -1) {
              ret = (field in CRUD.EntityManager.entities[this.getType()].defaultValues) ? CRUD.EntityManager.entities[this.getType()].defaultValues[field] : null;
          } else {
              CRUD.log('Could not find field \'' + field + '\' in \'' + this.getType() + '\' (for get)');
          }
          return ret;
      }
docs: Accessor. Gets one field, optionally returns the default value.