pub fn ser_describe_stack_instance_input_input_input(
input: &crate::operation::describe_stack_instance::DescribeStackInstanceInput,
) -> ::std::result::Result<::aws_smithy_types::body::SdkBody, ::aws_smithy_types::error::operation::SerializationError> {
let mut out = String::new();
#[allow(unused_mut)]
let mut writer = ::aws_smithy_query::QueryWriter::new(&mut out, "DescribeStackInstance", "2010-05-15");
#[allow(unused_mut)]
let mut scope_1 = writer.prefix("StackSetName");
if let Some(var_2) = &input.stack_set_name {
scope_1.string(var_2);
}
#[allow(unused_mut)]
let mut scope_3 = writer.prefix("StackInstanceAccount");
if let Some(var_4) = &input.stack_instance_account {
scope_3.string(var_4);
}
#[allow(unused_mut)]
let mut scope_5 = writer.prefix("StackInstanceRegion");
if let Some(var_6) = &input.stack_instance_region {
scope_5.string(var_6);
}
#[allow(unused_mut)]
let mut scope_7 = writer.prefix("CallAs");
if let Some(var_8) = &input.call_as {
scope_7.string(var_8.as_str());
}
writer.finish();
Ok(::aws_smithy_types::body::SdkBody::from(out))
}