RouteSection 
    class RouteSection(val type: RouteSectionType, val indexRange: IntRange, val textureUri: Uri? = null)
Represent the Route section.
Properties
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                  The range of indexes in a RouteOptions.geometry covered by this section.
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                  The URI of the texture. The protocol should be one of "asset" or "file". 
Can also reset texture for particular segments when empty string provided.
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                  The type for the section.