private boolean isOpInvalidate() {
    // Note that OP_CREATE_LI, OP_LLOAD_CREATE_LI, and OP_NLOAD_CREATE_LI
    // do not return true here because they are actually creates
    // with a value of LOCAL_INVALID locally and some other value remotely.
    return op <= OP_D_INVALIDATE && op >= OP_L_INVALIDATE;
  }
@return the value, or null if the value does not exist in the cache, Token.INVALID or
        Token.LOCAL_INVALID if the value is invalid
geode-core/src/main/java/org/apache/geode/internal/cache/TXEntryState.java