erwise return <code>null</code>. Note that because the specification for
 <a href="../../../jakarta/faces/component/UIComponent.html#setValueBinding-java.lang.String-jakarta.faces.el.ValueBinding-"><code>UIComponent.setValueBinding(java.lang.String, jakarta.faces.el.ValueBinding)</code></a> requires a call through to <a href="../../../jakarta/faces/component/UIComponent.html#setValueExpression-java.lang.String-jakarta.el.ValueExpression-"><code>UIComponent.setValueExpression(java.lang.String, jakarta.el.Val