Answered Proper way to find all resources in/not in given group?

// Get by group name
$group = $modx->getOption('group', $scriptProperties, 'defaultGroup');
$inOrnot = $modx->getOption('inOrNot', $scriptProperties, true); // &inOrNot=`true` or `&inOrNot=`false`

$c = $modx->newQuery('modResource');
$c->innerJoin('modResourceGroupResource', 'modResourceGroupResource', 'modResourceGroupResource.document = modResource.id');
$c->innerJoin('modResourceGroup', 'modResourceGroup', 'modResourceGroup.id = modResourceGroupResource.document_group');
if (!$inOrNot) { // not in group
    $c->where(array('modResourceGroup.name:!=' => $group));
} else {
    $c->where(array('modResourceGroup.name' => $group));
}
$collection = $modx->getCollection('modResource', $c);

[[snippetName?group=`mygroup` &inOrNot=`true`]]

$group = $modx->getOption('group', $scriptProperties, 'defaultGroup');
$in = $modx->getOption('in', $scriptProperties, null);
$notin = $modx->getOption('notin', $scriptProperties, null);

$c = $modx->newQuery('modResource');
$c->innerJoin('modResourceGroupResource', 'modResourceGroupResource', 'modResourceGroupResource.document = modResource.id');
$c->innerJoin('modResourceGroup', 'modResourceGroup', 'modResourceGroup.id = modResourceGroupResource.document_group');

if ($in !== null) {
    $c->where(array(
        'modResourceGroup.name:IN' => explode(',', $in)
    ));
}
if ($notin !== null) {
    $c->where(array(
        'modResourceGroup.name:NOT IN' => explode(',', $notin)
    ));
}
$collection = $modx->getCollection('modResource', $c);

[[migxLoopCollection?
&classname = `modResource`
&joins=`[{"alias":"ResourceGroupResources"}]`
&where=`{"ResourceGroupResources.document_group":"25"}`
&tpl=`myTpl`
]]

[[!GroupResources? &groupId=`12` &inGroup=`0`]]

<?php
$groupId = $scriptProperties['groupId'];
$inGroup = $scriptProperties['inGroup'];

$query = $modx->newQuery('modResourceGroupResource');

if ($inGroup) {
    $query->where(array('document_group' => $groupId));
} else {
    $query->where(array('document_group:!=' => $groupId));
}

$rgrs = $modx->getCollection('modResourceGroupResource', $query);
$count = count($rgrs);

foreach ($rgrs as $rgr) {
    $doc = $rgr->getOne('Resource');

    /* Do something with $doc object */

    echo '<br />' . $doc->get('pagetitle');
}

return 'Did something with ' . $count . ' Resources';

<?php
$object = $modx->getObject('modResourceGroup',array(
       'name' => 'Testing' ));
$pages = $object->getResources();
echo $pages;
return;