element_base.go
func (e *elementBase) AppendChild(child element) {
	e.children = append(e.children, child)
}
func (e *elementBase) AppendChild(child element) {
	e.children = append(e.children, child)
}
func ( e * elementBase ) AppendChild ( child element ) { e . children = append ( e . children , child ) }
// AppendChild appends the child element to the element.
AppendChild appends the child element to the element .