instance function
A secondary <instance id="name"> wrapping its items in <root>.
Implementation
XFormsElement instance(String name, List<XFormsElement> children) =>
t('instance id="$name"', [t('root', children)]);
A secondary <instance id="name"> wrapping its items in <root>.
XFormsElement instance(String name, List<XFormsElement> children) =>
t('instance id="$name"', [t('root', children)]);