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: _scp_action_definition.rs
    path of file: ./repos/aws-sdk-rust/sdk/budgets/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>The service control policies (SCP) action definition details.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct Sc
    
    pub fn build(self) -> ::std::result::Result<crate::types::ScpActionDefinition, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::ScpActionDefinition {
            policy_id: self.policy_id.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "policy_id",
                    "policy_id was not specified but it is required when building ScpActionDefinition",
                )
            })?,
            target_ids: self.target_ids.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "target_ids",
                    "target_ids was not specified but it is required when building ScpActionDefinition",
                )
            })?,
        })
    }