update

Author: thomas-k-cameron

codegen-core/src/test/kotlin/software/amazon/smithy/rust/codegen/core/smithy/generators/BuilderGeneratorTest.kt

@@ -26,6 +26,7 @@ import software.amazon.smithy.rust.codegen.core.testutil.asSmithyModel
 import software.amazon.smithy.rust.codegen.core.testutil.compileAndTest
 import software.amazon.smithy.rust.codegen.core.testutil.testSymbolProvider
 import software.amazon.smithy.rust.codegen.core.testutil.unitTest
+import software.amazon.smithy.rust.codegen.core.util.errorMessageMember
 import kotlin.io.path.extension
 import kotlin.io.path.readText
 import software.amazon.smithy.rust.codegen.core.util.lookup