https://source.android.com/ 
public interface android.provider.CalendarContract$SyncColumns extends android.provider.CalendarContract$CalendarSyncColumns
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: android.provider.CalendarContract$SyncColumns
  super_class: java.lang.Object
{
  public static final java.lang.String ACCOUNT_NAME;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "account_name"

  public static final java.lang.String ACCOUNT_TYPE;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "account_type"

  public static final java.lang.String _SYNC_ID;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "_sync_id"

  public static final java.lang.String DIRTY;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "dirty"

  public static final java.lang.String MUTATORS;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "mutators"

  public static final java.lang.String DELETED;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "deleted"

  public static final java.lang.String CAN_PARTIALLY_UPDATE;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "canPartiallyUpdate"
}
SourceFile: "CalendarContract.java"
NestHost: android.provider.CalendarContract
InnerClasses:
  protected abstract CalendarSyncColumns = android.provider.CalendarContract$CalendarSyncColumns of android.provider.CalendarContract
  protected abstract SyncColumns = android.provider.CalendarContract$SyncColumns of android.provider.CalendarContract