<rng:optional><rng:attribute name="domain" /> </rng:optional>
<rng:optional><rng:attribute name="src_model" /></rng:optional>
<rng:optional><rng:attribute name="context" /></rng:optional>
- <rng:optional> <rng:attribute name="view"/> </rng:optional>
<rng:optional> <rng:attribute name="view_id"/> </rng:optional>
<rng:optional> <rng:attribute name="view_type"/> </rng:optional>
<rng:optional> <rng:attribute name="view_mode"/> </rng:optional>