TYPEMAP
PerlIntervalTree * O_OBJECT
PerlIntervalTree_Node * PERLINTERVALTREE_NODE
OUTPUT
PERLINTERVALTREE_NODE
sv_setref_pv( $arg, \"Set::IntervalTree::Node\", (void*)$var );
INPUT
PERLINTERVALTREE_NODE
if( sv_isobject($arg) && (SvTYPE(SvRV($arg)) == SVt_PVMG) )
$var = ($type)SvIV((SV*)SvRV( $arg ));
else{
warn( \"${Package}::$func_name() -- $var is not a blessed SV reference\" );
XSRETURN_UNDEF;
}