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: _violation_event_occurrence_range.rs
    path of file: ./repos/aws-sdk-rust/sdk/iot/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>Specifies the time period of which violation events occurred between.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct ViolationEventOccurrenceRange {
    /// <p>The start date and time of a time period in which violation events occurred.</p>
    pub start_time: ::aws_smithy_types::DateTime,
    /// <p>The end date and time of a time period in which violation events occurred.</p>

    
    pub fn build(self) -> ::std::result::Result<crate::types::ViolationEventOccurrenceRange, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::ViolationEventOccurrenceRange {
            start_time: self.start_time.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "start_time",
                    "start_time was not specified but it is required when building ViolationEventOccurrenceRange",
                )
            })?,
            end_time: self.end_time.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "end_time",
                    "end_time was not specified but it is required when building ViolationEventOccurrenceRange",
                )
            })?,
        })
    }