runtime/runtime.go
func (p GetPropertiesParams) WithOwnProperties(ownProperties bool) *GetPropertiesParams {
	p.OwnProperties = ownProperties
	return &p
}
func (p GetPropertiesParams) WithOwnProperties(ownProperties bool) *GetPropertiesParams {
	p.OwnProperties = ownProperties
	return &p
}
// WithOwnProperties if true, returns properties belonging only to the
// element itself, not to its prototype chain.