message: Add documentation for NnApiDelegate cache configuration API
diff: @@ -64,16 +64,34 @@ public class NnApiDelegate implements Delegate, AutoCloseable {
  return this;
  }
  + /**
  + * Specifies the name of the target accelerator to be used by NNAPI. If this parameter is
  + * specified the {@link #setUseNnapiCpu(boolean)} method won't have any effect.
  + *
  + * <p>Only effective on Android 10 (API level 29) and above.
  + */
  public Options setAcceleratorName(String name) {
  this.acceleratorName = name;
  return this;
  }
  + /**
  + * Configure the location to be used to store model compilation cache entries. If either
  + * {@code cacheDir} or {@code modelToken} parameters are unset NNAPI caching will be disabled.
  + *
  + * <p>Only effective on Android 10 (API level 29) and above.
  + */
  public Options setCacheDir(String cacheDir) {
  this.cacheDir = cacheDir;
  return this;
  }
  + /**
  + * Sets the token to be used to identify this model in the model compilation cache. If either
  + * {@code cacheDir} or {@code modelToken} parameters are unset NNAPI caching will be disabled.
  + *
  + * <p>Only effective on Android 10 (API level 29) and above.
  + */
  public Options setModelToken(String modelToken) {
  this.modelToken = modelToken;
  return this;
  @@ -93,7 +111,7 @@ public class NnApiDelegate implements Delegate, AutoCloseable {
  * Enable or disable the NNAPI CPU Device "nnapi-reference". If unset it will use the NNAPI
  * default settings.
  *
  - * <p>Only effective on Android 10 and above.
  + * <p>Only effective on Android 10 (API level 29) and above.
  */
  public Options setUseNnapiCpu(boolean enable) {
  this.useNnapiCpu = !enable;
  