group TextureBackgroundChildContentModel

diagram
children	ImageTexture MovieTexture MultiTexture PixelTexture ProtoInstance
used by	element  TextureBackground
annotation	appinfo TextureBackgroundChildContentModel is the child-node content model utilized by TextureBackground.  TextureBackgroundChildContentModel can contain up to six Texture nodes (ImageTexture, MovieTexture, MultiTexture or PixelTexture).  Each child texture shall have a different containerField for topTexture, bottomTexture, leftTexture, rightTexture, frontTexture and backTexture.
source	<xs:group name="TextureBackgroundChildContentModel">   <xs:annotation>     <xs:appinfo>TextureBackgroundChildContentModel is the child-node content model utilized by TextureBackground.  TextureBackgroundChildContentModel can contain up to six Texture nodes (ImageTexture, MovieTexture, MultiTexture or PixelTexture).  Each child texture shall have a different containerField for topTexture, bottomTexture, leftTexture, rightTexture, frontTexture and backTexture.</xs:appinfo>     <xs:documentation source="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/environmentalEffects.html#TextureBackground"/>   </xs:annotation>   <xs:choice>     <xs:element ref="ImageTexture"/>     <xs:element ref="MovieTexture"/>     <xs:element ref="MultiTexture"/>     <xs:element ref="PixelTexture"/>     <xs:element ref="ProtoInstance">       <xs:annotation>         <xs:documentation>Appropriately typed substitution node</xs:documentation>       </xs:annotation>     </xs:element>   </xs:choice>   <!--Controversial construct, throws errors if includes minOccurs="0" maxOccurs="6".  Deterministic content model.         Moved constraint to parent referring xs:group OK.  Still need to test if more than 6 children will be invalidated.--> </xs:group>

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