<doc> * The parameter @p e supplied to this function must be NULL if</doc>
<doc> * <xsl:value-of select="xcb:xcb-prefix(@name)" />_unchecked(). is used.</doc>
<doc> * Otherwise, it stores the error if any.</doc>
<doc> * The parameter @p e supplied to this function must be NULL if</doc>
<doc> * <xsl:value-of select="xcb:xcb-prefix(@name)" />_unchecked(). is used.</doc>
<doc> * Otherwise, it stores the error if any.</doc>