add contract

Author: zeitlinger

instrumentation-api/src/main/java/io/opentelemetry/instrumentation/api/instrumenter/InstrumenterBuilder.java

@@ -370,7 +370,6 @@ private String getSchemaUrl() {
   SpanSuppressor buildSpanSuppressor() {
     // otel.instrumentation.experimental.* doesn't fit the usual pattern of configuration properties
     // for instrumentations, so we need to handle both declarative and non-declarative configs here
-
     String value =
         ConfigPropertiesUtil.isDeclarativeConfig(openTelemetry)
             ? ConfigPropertiesUtil.getString(

instrumentation-api/src/main/java/io/opentelemetry/instrumentation/api/internal/ConfigPropertiesUtil.java

@@ -11,14 +11,14 @@
 import io.opentelemetry.api.incubator.ExtendedOpenTelemetry;
 import io.opentelemetry.api.incubator.config.ConfigProvider;
 import io.opentelemetry.api.incubator.config.DeclarativeConfigProperties;
-import org.jetbrains.annotations.Contract;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Locale;
 import java.util.function.BiFunction;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 import javax.annotation.Nullable;
+import org.jetbrains.annotations.Contract;
 
 /**
  * This class is internal and is hence not for public use. Its APIs are unstable and can change at