+/**
+ * GMarkupParser:
+ * @start_element: Callback to invoke when the opening tag of an element
+ * is seen. The callback's @attribute_names and @attribute_values parameters
+ * are %NULL-terminated.
+ * @end_element: Callback to invoke when the closing tag of an element
+ * is seen. Note that this is also called for empty tags like
+ * `<empty/>`.
+ * @text: Callback to invoke when some text is seen (text is always
+ * inside an element). Note that the text of an element may be spread
+ * over multiple calls of this function. If the
+ * %G_MARKUP_TREAT_CDATA_AS_TEXT flag is set, this function is also
+ * called for the content of CDATA marked sections.
+ * @passthrough: Callback to invoke for comments, processing instructions
+ * and doctype declarations; if you're re-writing the parsed document,
+ * write the passthrough text back out in the same position. If the
+ * %G_MARKUP_TREAT_CDATA_AS_TEXT flag is not set, this function is also
+ * called for CDATA marked sections.
+ * @error: Callback to invoke when an error occurs.
+ *
+ * Any of the fields in #GMarkupParser can be %NULL, in which case they
+ * will be ignored. Except for the @error function, any of these callbacks
+ * can set an error; in particular the %G_MARKUP_ERROR_UNKNOWN_ELEMENT,
+ * %G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE, and %G_MARKUP_ERROR_INVALID_CONTENT
+ * errors are intended to be set from these callbacks. If you set an error
+ * from a callback, g_markup_parse_context_parse() will report that error
+ * back to its caller.
+ */