var oldTable, newTable interface{}
	if v, ok := oldName.(string); ok {
		oldTable = clause.Table{Name: v}
	} else {
		stmt := &gorm.Statement{DB: m.DB}
		if err := stmt.Parse(oldName); err == nil {
			oldTable = m.CurrentTable(stmt)
		} else {
			return err
		}
	}

	if v, ok := newName.(string); ok {
		newTable = clause.Table{Name: v}
	} else {

    }

    AtomicReferenceArray<E> newEntryArray(int size) {
      return new AtomicReferenceArray<>(size);
    }

    void initTable(AtomicReferenceArray<E> newTable) {
      this.threshold = newTable.length() * 3 / 4; // 0.75
      this.table = newTable;
    }

    // Convenience methods for testing

    /**
     * Unsafe cast of the given entry to {@code E}, the type of the specific {@link InternalEntry}

    }

    AtomicReferenceArray<E> newEntryArray(int size) {
      return new AtomicReferenceArray<>(size);
    }

    void initTable(AtomicReferenceArray<E> newTable) {
      this.threshold = newTable.length() * 3 / 4; // 0.75
      this.table = newTable;
    }

    // Convenience methods for testing

    /**
     * Unsafe cast of the given entry to {@code E}, the type of the specific {@link InternalEntry}

    }

    void initTable(AtomicReferenceArray<ReferenceEntry<K, V>> newTable) {
      this.threshold = newTable.length() * 3 / 4; // 0.75
      if (!map.customWeigher() && this.threshold == maxSegmentWeight) {
        // prevent spurious expansion before eviction
        this.threshold++;
      }
      this.table = newTable;
    }

    @GuardedBy("this")

    }

    void initTable(AtomicReferenceArray<ReferenceEntry<K, V>> newTable) {
      this.threshold = newTable.length() * 3 / 4; // 0.75
      if (!map.customWeigher() && this.threshold == maxSegmentWeight) {
        // prevent spurious expansion before eviction
        this.threshold++;
      }
      this.table = newTable;
    }

    @GuardedBy("this")