guint gtk_css_section_get_end_position ( const GtkCssSection* section )
Returns the offset in bytes from the start of the current line
returned via gtk_css_section_get_end_line().
This value may change in future invocations of this function if
section is not yet parsed completely. This will for example
happen in the GtkCssProvider::parsing-error signal.
The end position and line may be identical to the start
position and line for sections which failed to parse anything successfully.