public FieldIdsSection getFieldIds() {
    return fieldIds;
  }
Gets the field identifiers section.

<p>This is public in order to allow the various {@link Item} instances to add items to the
instance and help early counting of field ids.

@return {@code non-null;} the field identifiers section
android/android_framework/dex-maker/src/main/java/com/android/dx/dex/file/DexFile.java