k-property-description> is the optional index of the any hit shader from <b><a href="../structs/VkRayTracingPipelineCreateInfoNV.html">VkRayTracingPipelineCreateInfoNV</a></b>::<b>pStages</b> in the group if the shader group has <b>type</b> of <b>VK_RAY_TRACING_SHADER_GROUP_TYPE_TRIANGLES_HIT_GROUP_NV</b> or <b>VK_RAY_TRACING_SHADER_GROUP_TYPE_PROCEDURAL_HIT_GROUP_NV</b> and <b>VK_SHADER_UNUSED_NV</b> otherwise.</vk-property-description>
      </vk-property-entry>
      <vk-property-entry>
        <vk-prope