add javadoc

Author: zeitlinger

sdk-extensions/incubator/src/main/java/io/opentelemetry/sdk/extension/incubator/fileconfig/DeclarativeConfigurationBuilder.java

@@ -8,6 +8,7 @@
 import io.opentelemetry.sdk.extension.incubator.fileconfig.internal.model.OpenTelemetryConfigurationModel;
 import java.util.function.Function;
 
+/** Builder for the declarative configuration. */
 public class DeclarativeConfigurationBuilder implements DeclarativeConfigurationCustomizer {
   private Function<OpenTelemetryConfigurationModel, OpenTelemetryConfigurationModel>
       modelCustomizer = Function.identity();
@@ -26,6 +27,7 @@ private static <I, O1, O2> Function<I, O2> mergeCustomizer(
     };
   }
 
+  /** Customize the configuration model. */
   public OpenTelemetryConfigurationModel customizeModel(
       OpenTelemetryConfigurationModel configurationModel) {
     return modelCustomizer.apply(configurationModel);

sdk-extensions/incubator/src/main/java/io/opentelemetry/sdk/extension/incubator/fileconfig/DeclarativeConfigurationCustomizer.java

@@ -8,7 +8,14 @@
 import io.opentelemetry.sdk.extension.incubator.fileconfig.internal.model.OpenTelemetryConfigurationModel;
 import java.util.function.Function;
 
+/** A service provider interface (SPI) for customizing declarative configuration. */
 public interface DeclarativeConfigurationCustomizer {
+  /**
+   * Method invoked when configuring the SDK to allow further customization of the declarative
+   * configuration.
+   *
+   * @param customizer the customizer to add
+   */
   void addModelCustomizer(
       Function<OpenTelemetryConfigurationModel, OpenTelemetryConfigurationModel> customizer);
 }

sdk-extensions/incubator/src/main/java/io/opentelemetry/sdk/extension/incubator/fileconfig/DeclarativeConfigurationCustomizerProvider.java

@@ -7,6 +7,12 @@
 
 import io.opentelemetry.sdk.autoconfigure.spi.Ordered;
 
+/** A service provider interface (SPI) for customizing declarative configuration. */
 public interface DeclarativeConfigurationCustomizerProvider extends Ordered {
+  /**
+   * Method invoked when configuring the SDK to allow further customization of the declarative
+   *
+   * @param customizer the customizer to add
+   */
   void customize(DeclarativeConfigurationCustomizer customizer);
 }