prepare 5.6.2 release (#245)

Author: LaunchDarklyReleaseBot

src/main/java/com/launchdarkly/sdk/server/FeatureFlagsState.java

@@ -189,6 +189,23 @@ public Builder valid(boolean valid) {
  return this;
  }
 
+ /**
+ * Adds data to the builder representing the result of a feature flag evaluation.
+ * <p>
+ * The {@code flagVersion}, {@code trackEvents}, and {@code debugEventsUntilDate} parameters are
+ * normally generated internally by the SDK; they are used if the {@link FeatureFlagsState} data
+ * has been passed to front-end code, to control how analytics events are generated by the front
+ * end. If you are using this builder in back-end test code, those values are unimportant.
+ * 
+ * @param flagKey the feature flag key
+ * @param value the evaluated value
+ * @param variationIndex the evaluated variation index
+ * @param reason the evaluation reason
+ * @param flagVersion the current flag version 
+ * @param trackEvents true if full event tracking is turned on for this flag
+ * @param debugEventsUntilDate if set, event debugging is turned until this time (millisecond timestamp) 
+ * @return the builder
+ */
  public Builder add(
  String flagKey,
  LDValue value,
@@ -225,7 +242,12 @@ Builder addFlag(DataModel.FeatureFlag flag, Evaluator.EvalResult eval) {
  );
  }
 
- FeatureFlagsState build() {
+ /**
+ * Returns an object created from the builder state.
+ * 
+ * @return an immutable {@link FeatureFlagsState}
+ */
+ public FeatureFlagsState build() {
  return new FeatureFlagsState(flagMetadata.build(), valid);
  }
  }