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/// The material appearance of a primitive.
#[derive(Clone, Debug, Default, Deserialize, Validate)]
pub struct Material {}

/// A set of parameter values that are used to define the metallic-roughness
/// material model from Physically-Based Rendering (PBR) methodology.
#[derive(Clone, Debug, Default, Deserialize, Validate)]
pub struct PbrMetallicRoughness {}

/// Defines the normal texture of a material.
#[derive(Clone, Debug, Default, Deserialize, Validate)]
pub struct NormalTexture {}

/// Defines the occlusion texture of a material.
#[derive(Clone, Debug, Default, Deserialize, Validate)]
pub struct OcclusionTexture {}