Add non-tree element lists to python bindings.

Fixes #1752.

PiperOrigin-RevId: 649405039
Change-Id: Ie0b575a3ec912b773141694397ac2f394bff1227

doc/APIreference/functions.rst

@@ -4176,6 +4176,24 @@ mjs_nextChild
 
 Return body's next child of the same type; return NULL if child is last.
 
+.. _mjs_firstElement:
+
+mjs_firstElement
+~~~~~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_firstElement
+
+Return spec's first element of selected type.
+
+.. _mjs_nextElement:
+
+mjs_nextElement
+~~~~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_nextElement
+
+Return spec's next element; return NULL if element is last.
+
 .. _mjs_asBody:
 
 mjs_asBody
@@ -4239,6 +4257,150 @@ mjs_asFrame
 
 Safely cast an element as mjsFrame, or return NULL if the element is not an mjsFrame.
 
+.. _mjs_asActuator:
+
+mjs_asActuator
+~~~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_asActuator
+
+Safely cast an element as mjsActuator, or return NULL if the element is not an mjsActuator.
+
+.. _mjs_asSensor:
+
+mjs_asSensor
+~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_asSensor
+
+Safely cast an element as mjsSensor, or return NULL if the element is not an mjsSensor.
+
+.. _mjs_asFlex:
+
+mjs_asFlex
+~~~~~~~~~~
+
+.. mujoco-include:: mjs_asFlex
+
+Safely cast an element as mjsFlex, or return NULL if the element is not an mjsFlex.
+
+.. _mjs_asPair:
+
+mjs_asPair
+~~~~~~~~~~
+
+.. mujoco-include:: mjs_asPair
+
+Safely cast an element as mjsPair, or return NULL if the element is not an mjsPair.
+
+.. _mjs_asEquality:
+
+mjs_asEquality
+~~~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_asEquality
+
+Safely cast an element as mjsEquality, or return NULL if the element is not an mjsEquality.
+
+.. _mjs_asExclude:
+
+mjs_asExclude
+~~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_asExclude
+
+Safely cast an element as mjsExclude, or return NULL if the element is not an mjsExclude.
+
+.. _mjs_asTendon:
+
+mjs_asTendon
+~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_asTendon
+
+Safely cast an element as mjsTendon, or return NULL if the element is not an mjsTendon.
+
+.. _mjs_asNumeric:
+
+mjs_asNumeric
+~~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_asNumeric
+
+Safely cast an element as mjsNumeric, or return NULL if the element is not an mjsNumeric.
+
+.. _mjs_asText:
+
+mjs_asText
+~~~~~~~~~~
+
+.. mujoco-include:: mjs_asText
+
+Safely cast an element as mjsText, or return NULL if the element is not an mjsText.
+
+.. _mjs_asTuple:
+
+mjs_asTuple
+~~~~~~~~~~~
+
+.. mujoco-include:: mjs_asTuple
+
+Safely cast an element as mjsTuple, or return NULL if the element is not an mjsTuple.
+
+.. _mjs_asKey:
+
+mjs_asKey
+~~~~~~~~~
+
+.. mujoco-include:: mjs_asKey
+
+Safely cast an element as mjsKey, or return NULL if the element is not an mjsKey.
+
+.. _mjs_asMesh:
+
+mjs_asMesh
+~~~~~~~~~~
+
+.. mujoco-include:: mjs_asMesh
+
+Safely cast an element as mjsMesh, or return NULL if the element is not an mjsMesh.
+
+.. _mjs_asHField:
+
+mjs_asHField
+~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_asHField
+
+Safely cast an element as mjsHField, or return NULL if the element is not an mjsHField.
+
+.. _mjs_asSkin:
+
+mjs_asSkin
+~~~~~~~~~~
+
+.. mujoco-include:: mjs_asSkin
+
+Safely cast an element as mjsSkin, or return NULL if the element is not an mjsSkin.
+
+.. _mjs_asTexture:
+
+mjs_asTexture
+~~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_asTexture
+
+Safely cast an element as mjsTexture, or return NULL if the element is not an mjsTexture.
+
+.. _mjs_asMaterial:
+
+mjs_asMaterial
+~~~~~~~~~~~~~~
+
+.. mujoco-include:: mjs_asMaterial
+
+Safely cast an element as mjsMaterial, or return NULL if the element is not an mjsMaterial.
+
 .. _AttributeSetters:
 
 Attribute setters