add TODO comment

Author: lucaspimentel

dd-trace-api/src/main/java/datadog/trace/api/ConfigDefaults.java

@@ -77,6 +77,7 @@ public final class ConfigDefaults {
   static final int DEFAULT_SCOPE_ITERATION_KEEP_ALIVE = 30; // in seconds
   static final int DEFAULT_PARTIAL_FLUSH_MIN_SPANS = 1000;
   static final boolean DEFAULT_PROPAGATION_EXTRACT_LOG_HEADER_NAMES_ENABLED = false;
+  // TODO: add BAGGAGE to the list of default propagation styles
   static final Set<TracePropagationStyle> DEFAULT_TRACE_PROPAGATION_STYLE =
       new LinkedHashSet<>(asList(DATADOG, TRACECONTEXT));
   static final Set<PropagationStyle> DEFAULT_PROPAGATION_STYLE =

dd-trace-core/src/main/java/datadog/trace/core/propagation/HttpCodec.java

@@ -233,6 +233,7 @@ public <C> TagContext extract(
             context = extractedContext;
             // Stop extraction if only extracting first valid context and drop everything else
             if (this.extractFirst) {
+              // TODO: change this logic to always extract baggage
               break;
             }
           }