}
/**
- * Set whether the HTML form can be collapsed.
+ * Enable collapsible mode, and set whether the form is collapsed by default.
*
* @since 1.34
- * @param bool $collapsedByDefault (optional) whether the form is collapsed by default
+ * @param bool $collapsedByDefault Whether the form is collapsed by default (optional).
* @return HTMLForm $this for chaining calls
*/
public function setCollapsibleOptions( $collapsedByDefault = false ) {