expandSection method
Implementation
void expandSection(K sectionKey, {bool animate = true}) {
_checkNotDisposed();
_requireSection(sectionKey, "expandSection");
_tree.expand(key: SectionKey<K>(sectionKey), animate: animate);
}
void expandSection(K sectionKey, {bool animate = true}) {
_checkNotDisposed();
_requireSection(sectionKey, "expandSection");
_tree.expand(key: SectionKey<K>(sectionKey), animate: animate);
}