inding between a local scope property and the
parent scope property of name defined via the value of the <code>attr</code> attribute. If no <code>attr</code>
name is specified then the attribute name is assumed to be the same as the local name.
Given <code>&lt;widget my-attr=&quot;parentModel&quot;&gt;</code> and widget definition of
<code>scope: { localModel:&#39;=myAttr&#39; }</code>, then widget scope property <code>localModel</code> will reflect the
value of <code>parentModel</code> on the parent scope.