You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: _asset_model_composite_model_definition.rs
    path of file: ./repos/aws-sdk-rust/sdk/iotsitewise/src/types
    
    the code of the file until where you have to start completion: // Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.

/// <p>Contains a composite model definition in an asset model. This composite model definition is applied to all assets created from the asset model.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct AssetModelCompositeModelDefinition {
    /// <p>T
    
    pub fn build(self) -> ::std::result::Result<crate::types::AssetModelCompositeModelDefinition, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::AssetModelCompositeModelDefinition {
            name: self.name.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "name",
                    "name was not specified but it is required when building AssetModelCompositeModelDefinition",
                )
            })?,
            description: self.description,
            r#type: self.r#type.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "r#type",
                    "r#type was not specified but it is required when building AssetModelCompositeModelDefinition",
                )
            })?,
            properties: self.properties,
            id: self.id,
            external_id: self.external_id,
        })
    }