static int findQualifiedNameStart(@NotNull InsertionContext context) {
    int start = context.getTailOffset() - 1;
    while (start >= 0) {
      char ch = context.getDocument().getCharsSequence().charAt(start);
      if (!Character.isJavaIdentifierPart(ch) && ch != '.') break;
      start--;
    }
    return start + 1;
  }
static int findQualifiedNameStart(@NotNull InsertionContext context)