class_docstr: Internal class to parse XML into DataFrames with third-party
  full-featured XML library, `lxml`, that supports
  XPath 1.0 and XSLT 1.0.
code: def _validate_names(self) -> None:
      children: list[Any]
  
      if self.names:
          if self.iterparse:
              children = self.iterparse[next(iter(self.iterparse))]
          else:
              children = self.xml_doc.xpath(
                  self.xpath + "[1]/*", namespaces=self.namespaces
              )
  
          if is_list_like(self.names):
              if len(self.names) < len(children):
                  raise ValueError(
                      "names does not match length of child elements in xpath."
                  )
          else:
              raise TypeError(
                  f"{type(self.names).__name__} is not a valid type for names"
              )
  
imports: from __future__ import annotations
  import io
  from typing import Any, Callable, Sequence
  from pandas._libs import lib
  from pandas._typing import TYPE_CHECKING, CompressionOptions, ConvertersArg, DtypeArg, DtypeBackend, FilePath, ParseDatesArg, ReadBuffer, StorageOptions, XMLParsers
  from pandas.compat._optional import import_optional_dependency
  from pandas.errors import AbstractMethodError, ParserError
  from pandas.util._decorators import doc
  from pandas.util._validators import check_dtype_backend
  from pandas.core.dtypes.common import is_list_like
  from pandas.core.shared_docs import _shared_docs
  from pandas.io.common import file_exists, get_handle, infer_compression, is_fsspec_url, is_url, stringify_path
  from pandas.io.parsers import TextParser
label_desc: Use image node_id 3 for calling the _LxmlFrameParser obj's underlying member method code with example usage: obj._validate_names() without return types