public static @NotNull CharTable findCharTableByTree(ASTNode tree) {
    for (ASTNode o = tree; o != null; o = o.getTreeParent()) {
      CharTable charTable = o.getUserData(CharTable.CHAR_TABLE_KEY);
      if (charTable != null) {
        return charTable;
      }
      if (o instanceof FileASTNode) {
        return ((FileASTNode)o).getCharTable();
      }
    }
    throw new AssertionError("CharTable not found in: " + tree);
  }
public static @NotNull CharTable findCharTableByTree(ASTNode tree)